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By E. Quadir. City University of Los Angeles. 2019.

And some people who believe they have allergies may actually have a common condition known as nonallergic rhinitis discount dilantin online, a reaction that can be triggered by an infection buy dilantin master card, a sensitivity to chemicals or drugs dilantin 100mg low price, changes in weather patterns order dilantin with a mastercard, and more. Those Seasonal Allergy Symptoms Might Not Be Allergies. It is part of what we call the Allergic March, where children first develop eczema in infancy, sometimes followed by food allergy, and then go on to develop allergic rhinitis and then asthma. Symptoms of allergic rhinitis can be any combination of itching in the back of the throat, eyes or nose, sneezing, runny eyes or nose, and blocked nose. Reducing the time you spend outdoors may provide some much-needed relief to your seasonal allergy symptoms but is not a long-term or realistic solution. Below are some of the most common seasonal allergy symptoms. If certain seasons cause symptoms, keep the windows closed, use air conditioning if possible, and stay indoors when pollen/mold/weed counts are high. These symptoms often come with itchy, watery, and/or red eyes, which is called allergic conjunctivitis Kids who have wheezing and shortness of breath in addition to these symptoms might have allergies that trigger asthma. Seasonal allergies can start at almost any age, though they usually develop by the time someone is 10 years old and reach their peak in the early twenties, with symptoms often disappearing later in adulthood. For example, in the mid-Atlantic states, tree pollination is February through May, grass pollen runs from May through June, and weed pollen is from August through October — so kids with these allergies are likely to have increased symptoms at those times. The most common pollen allergies are to grasses in Orange County and much of Southern California, where the growing season is nearly year-round. People suffering from moderate to severe seasonal allergies may want to consider allergy testing. Dr. Hnida points out, too, that persons with seasonal allergies can limit their suffering by cutting down on their exposure to allergens with certain behavioral and hygiene habits. For treating seasonal allergy symptoms, he says, over-the-counter and prescription antihistamines, decongestants, and nasal steroid sprays can offer a lot of relief. If Bielory is correct in theorizing that our changing diets, strengthening hygiene habits, and tendency to avoid allergens from an early age are contributing to greater prevalence of asthma and allergies, then perhaps a widespread spring cleaning with regard to how we view allergens is in order. He explained to National Geographic that pollen causes allergy symptoms because our immune systems pick up on a protein sequence in pollen which resembles that of a parasite, and so respond defensively with runny noses and eyes (and plenty of sneezing) in an attempt to dispel these seeming invaders from the body. "Children are more likely to manifest allergy and allergic asthma symptoms than adults because of their robust immune systems and smaller developing airways," says David Hill, MD, chair-elect of the board of directors of the American Lung Association of the Northeast. Springfield is ranked at number 20 and Worcester is ranked at number 63. After an unseasonably warm winter, spring allergies have arrived a bit early, along with asthma symptoms for those who suffer from the condition. Allergic rhinitis, also sometimes referred to as hay fever, results from an overreaction of the immune system. 1. Block out allergens: The No. 1 antiallergy move is to keep those triggers at bay, so be sure to leave your windows shut during pollen season. About 20% of people with hay fever are allergic to birch tree pollen. Hay fever, caused by an allergy to pollen, is very common. For many people with asthma, this release of histamine when they have hay fever makes asthma symptoms worse. Because both allergies and a cold cause similar symptoms, such as a runny nose and sneezing, itchy eyes and throat, and stuffy nose, some people confuse a cold with allergies. In the United States, spring often is the highest time for allergies, meaning your seasonal allergies could be the cause of your pain. For seasonal allergies, they occur mainly with pollen so it comes from plants, weeds, grasses and trees. Eye allergy preparations may be helpful when the eyes are affected by the same allergens that trigger rhinitis, causing redness, swelling, watery eyes and itching. Some people find that an antihistamine becomes less effective as the allergy season worsens or as their allergies change over time. Sometimes allergic rhinitis can be complicated by several medical conditions, such as a deviated septum (curvature of the bone and cartilage that separate the nostrils) or nasal polyps (abnormal growths inside the nose and sinuses). Many people have recurrent or chronic nasal congestion, excess mucus production, itching and other nasal symptoms similar to those of allergic rhinitis. Some people may experience both types of rhinitis, with perennial symptoms getting worse during specific pollen seasons. They are usually caused by allergic sensitivity to airborne mold spores or to pollens from grass, trees and weeds. Allergic rhinitis is commonly known as hay fever. If you sneeze a lot, if your nose is often runny or stuffy, or if your eyes, mouth or skin often feels itchy, you may have allergic rhinitis, a condition that affects 40 million to 60 million Americans. Symptoms of a reaction to mold allergies include sneezing, itching, congestion, runny nose and dry, scaling skin. For people who are suffering from spring allergies, it may be too late to change how the body responds to allergens. For other areas of the South, peak allergens are expected to hit at the end of April, and according to AccuWeather, tree pollen allergies will be followed up with grass pollen, which should tamp down at the end of June. Just as with allergic rhinitis, people can have either seasonal or perennial local allergic rhinitis. Local allergic rhinitis is an allergic reaction in the nose to an allergen, without systemic allergies. Seasonal allergic rhinitis occurs in particular during pollen seasons. The intradermal allergy test is more sensitive than the skin prick test but is more often positive in people that do not have symptoms to that allergen. Intranasal corticosteroid sprays - these nasal sprays are used for people with moderate to severe symptoms and are one of the most effective treatments for allergic rhinitis. A person with hay fever is allergic to some of the particles that get trapped in the nose, such as pollen. Perennial allergic rhinitis is usually caused by a reaction to allergens around the home, such as dust mites, moulds, animal hair or fur, or occupational allergens. Recent figures say more than 20 percent of children in the United States age 17 and under have nasal allergies, and most of these have some seasonal variation to their symptoms. The spring allergy season is upon us. Pollen counts are skyrocketing, sinuses are swelling, and for some of us other symptoms are creeping in as well. Having pollen allergies, or hay fever, means that you experience allergic reaction when exposed to pollen particles. With a dosage of 20 drops, one to three times a day, Triple Defense purports to reduce the duration and severity of allergy symptoms related to pollen, mold and dust. Jeffrey G. Demain, MD , who serves on the board of directors at the American Academy of Allergy Asthma and Immunology, says, Sulfites and metabisulfites are a natural product of fermentation and can be added as preservatives—this is most commonly a problem associated with red wine and some beers.” Other products that can also trigger spring allergy symptoms include grains, yeasts, and contaminants. An allergist can help determine if you have seasonal allergies, and the types of pollen to which you are allergic. Allergic conjunctivitis occurs when the eyes react to allergens with symptoms of reddening, itching and swelling. There are currently two FDA-approved sublingual (under-the-tongue) tablets for treating allergic rhinitis (with or without allergic conjunctivitis) in children and adults from a grass pollen allergy: If you have a grass allergy, you are more likely to be allergic to most types of grasses, if not all grasses, as grass pollens have very similar proteins that cause allergies. Their pollen is a very common allergen, and the symptoms of ragweed allergy can be especially severe. But the real culprits of summertime seasonal allergies are grasses, such as ryegrass and timothy grass, as well as certain weeds. Birch is one of the most common offenders in northern latitudes, where many people with hay fever react to its pollen. Trees are responsible for most springtime seasonal allergies. The most common allergens are pollens from wind-pollenated plants, such as trees, grasses, and weeds. Hay fever occurs when your immune system overreacts to an outdoor allergen, such as pollen An allergen is something that triggers an allergic response. People can develop hay fever at any age, but most people are diagnosed with the disorder in childhood or early adulthood, according to the Mayo Clinic Symptoms typically become less severe as people age. Hay Fever Hay fever, also known as allergic rhinitis, is an immune disorder characterized by an allergic response to pollen grains and other substances.

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The reduction in the expression of these Obesity-induced adipose inflammation is characterized inflammatory cytokines was confirmed at the protein level by recruitment of macrophages into adipose tissue safe 100mg dilantin, and (Figure 4(b)) cheap dilantin 100mg free shipping. Cell-cell contact between adipocytes and inflammatory cytokines from peritoneal macrophages cocul- macrophages is considered to be important for triggering tured with adipocytes (Figure 4(c)) cheap dilantin master card. This is an open access article distributed under the Creative Commons Attribution License 100 mg dilantin otc, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. According to this view, the tissue destructive Th1 cells and cytokines Periodontitis is an inflammatory disease that affects the would arise in the early period of the disease, while the tooth-supporting tissues. It is considered one of the most tissue protective Th2 cells and cytokines would arise in the significant causes of tooth loss in humans and may associate late phase [2, 6, 7]. However, in several clinical contexts, the with systemic diseases, such as diabetes and arthritis [1–4]. Th1/Th2 balance/imbalance is not sufficient to explain the Pathogens of the subgingival bacterial biofilm are essential progression and/or remission of periodontitis observed in for the initiation and progression of periodontitis. These cells and cytokines have been origin due to the significant miscegenation among Brazilian associated with the pathogenesis of an extensive list of population [25, 26]. In was considered positive if bleeding occurred within 30 experimental models, Th17 is suggested to play a role in the seconds after probing [27]. At clear why such elevated levels are found in these patients the time of the examination, a peripheral blood sample was [14, 15, 17]. Allelic variants of cytokine genes are typically related This study protocol was approved by the local Institutional to either higher or lower production of these molecules Ethics Committee (324/08). In this regard, it is reasonable to hypothesize that genetic variation affecting the expression or activity 2. C7488T (rs763780) have recently been associated with higher Inflam m atorycellswerecountedinfourfieldsintwo susceptibility to rheumatoid arthritis [21]andulcerative independent sections (total evaluated area: ∼1mm ),2 using colitis [22]. Data were expressed as The purpose of the current study was to determine total of inflammatory cells/field. The inclusion criteria were subjects radish peroxidase-labelled monoclonal antibody. The data were determined using a standard curve preceding the research, and/or any systemic diseases (i. Thirty periodontally healthy patients subjected to fully impacted third molar extraction, age- and gender-matched 2. The suspensions were freeze thawed three times and finally centrifuged at 10,000 rpm for 10 min at 4◦C. The assay was performed in a 96-well microplate this regard, data from smoker and nonsmoker subjects were incubated for 5 min at 37◦C. The demographic characteristics of the studied population are presented in Table 2. Although not mechanistically conclusive, already been shown to be overexpressed in active periodontal these findings seem to be in line with the hypothesis of a sites [33]. Gamonal, “Levels of interleukin-17 in gingival crevic- do Estado de Minas Gerais), Brazil. Garlet, “Critical reviews in oral biology & medicine: bility to periodontitis,” Periodontology 2000,vol. Baker, “The role of immune responses in bone loss during “Association analysis of the interleukin 17A gene in Caucasian periodontal disease,” Microbes and Infection, vol. Silva, “Patterns of chemokines and chemokine receptors polymorphisms of interleukin-17A and interleukin-17F genes expression in different forms of human periodontal disease,” on the susceptibility to ulcerative colitis,” Journal of Clinical Journal of Periodontal Research, vol. Hajishengallis, “A new inflammatory periodontal diseases and conditions,” Annals of Periodontology, cytokine on the block: re-thinking periodontal disease and the vol. Armitage, “Periodontal diagnoses and classification of JournalofDentalResearch, vol. Vernal, “Periodontal inflammation and bone loss in aged mice,” “Over-expression of forkhead box P3 and its association with Journal of Periodontal Research, vol. Zheng, “The biological func- myeloperoxidase in gingival crevicular fluid from subjects tions of T helper 17 cell effector cytokines in inflammation,” with progressive chronic periodontitis: a longitudinal study,” Immunity, vol. Hart, “Genes and gene polymorphisms and bone destruction,” Journal of Experimental Medicine, vol. Bagos, “Cytokine gene polymorphisms in periodontal disease: a meta-analysis of 53 studies including 4178 cases and 4590 controls,” Journal of Clinical Periodontology,vol. Huang, “Interleukin-17F induces pulmonary neutrophilia and amplifies antigen-induced allergic response,” American Journal of Respiratory and Critical Care Medicine, vol. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. We assessed the level of inflammation in the lung and liver tissue from animals subjected to intermittent hypoxia and simulated sleep apnea. Overall, we found that exposure to intermittent hypoxia for 35 days by simulating sleep apnea leads to oxidative stress, inflammation, and increased activity of caspase 3 in the liver and lung. Cyclic episodes result in the momentary closure, liver disease by amplifying the tissue damage induced by a partial or complete, of the upper airway at the level of high dose of paracetamol [17, 18]. Oxidative Stress process in the lung and liver with intermittent hypoxia, suggesting that there is a recruitment of inflammatory medi- 2. The protein concentration in the homoge- ators recognized during ischemia and reperfusion. Here, we nate was measured spectrophotometrically at 595 nm using investigate the molecular mechanism involved in the lung the Bradford method. The change Postgraduation at the Hospital de Clınicas´ de Porto Alegre, in color is due to the presence of malondialdehyde and Brazil. The tubes were then stirred and centrifuged for 10 The mice were randomly divided into two experimental minutes at 1110 g. We used adrenaline in an alkaline medium to produce mixture reduces the oxygen fraction in the chambers by −2 adrenochrome and O [30]. Catalase enhances frozen in liquid nitrogen and kept at −80◦Cforsubsequent the decomposition of hydrogen peroxide into water and analysis. For analysis of oxidative stress, 100 mg of The decrease in absorption at 240 nm was determined tissue was added to 0. The results are represented Animal models that use intermittent hypoxia can help as the mean ± standard error of the mean. The statistical elucidate the mechanism of damage to various systems significance level was set as P<0. Independent of body mass index, the respiratory disturbance index is directly related to the 3. Lavie, “Obstructive sleep apnoea syndrome—an oxidative that the levels of this enzyme were increased in the lung and stress disorder,” Sleep Medicine Reviews, vol. Lavie, “Sleep-disordered breathing and cerebrovascular cleavage, caspases become active and initiate pathways that disease: a mechanistic approach,” Neurologic Clinics, vol. Day, “Oxidative demonstrating that there was activation of this apoptotic stress and oxidant signaling in obstructive sleep apnea and cascade. Lavie, “Oxidative stress-A unifying paradigm in obstructive sleep apnea and comorbidities,” Progress in Cardiovascular of signals initiated by oxidative stress, inflammation, and Diseases, vol. Raivio, “Nucleotide depletion due to reactive oxygen metabolites in endothelial cells: effects of 5. Saibara, “Effects of obstructive sleep apnea principle of protein dye binding,” Analytical Biochemistry, vol. Fridovich, “The role of superoxide anion obese patients: a prospective study,” Obesity Surgery, vol. Mendez-Sanchez,´ ´ “Experimental assembly of the head of bacteriophage T4,” Nature, vol. Gozal, “Elevated serum aminotransferase levels in children National Academy of Sciences of the United States of America, at risk for obstructive sleep apnea,” Chest, vol. Sakaguchi, “Clinicopathological intermittent hypoxia predisposes to liver injury,” Hepatology, significance of oxidative cellular damage in non-alcoholic fatty vol. Suzuki, “Effects of intermittent hypoxia on to systemic inflammation,” Sleep and Breathing, vol. Liu, “Chronic intermittent hypoxia activates nuclear Singh, “L-carnitine supplementation attenuates intermittent factor-κB in cardiovascular tissues in vivo,” Biochemical and hypoxia-induced oxidative stress and delays muscle fatigue in Biophysical Research Communications, vol.

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CDE requires ongoing therapy discount dilantin 100mg on-line, as it can have potential consequences for your eyes including: IS IT DRY EYE OR EYE ALLERGIES? Corticosteroid eye drops are effective cheap 100mg dilantin, but they often have side effects order dilantin online now, even when used only for a short time best purchase dilantin. Use a vacuum with a HEPA filter to reduce dust in your home or try keeping pets out of the bedroom to reduce exposure to their dander. These symptoms can occur alone or along with allergic rhinitis nasal symptoms. Yet they pose little threat to eyesight other than temporary blurriness. If you suffer from this type of allergy, you may notice your symptoms worsen during certain activities such as cleaning your house or grooming a pet. Ocular Emergencies: Red Eye The Medical Clinics of North America. Working with your allergist can help you find the treatment which best controls your symptoms and restores your quality of life. Caution is needed with some of these medications to prevent rebound symptoms such as with conjunctivitis medicamentosa.) Whether your allergies occur only seasonally or are instead present year-round, avoidance is not always possible, nor always a healthy option. Eye allergies may seem like a minor complaint relative to some other medical conditions, but can seriously affect your quality of life. People who are allergic to aspirin should not use these medications. Medicated eye drops are available in over-the-counter and prescription forms. Zyrtec and Xyzal may be slightly more efficacious for allergy symptoms but also have a slightly increased rate of sedation. These may include using cold compresses on your eyes and eyewashes with tear substitutes. A response to typical medications is helpful in the ultimate diagnosis of allergic eye disease, and failure to respond to medications may lead to a search for a different diagnosis. Some people notice sensitivity to light or blurred vision. Both eyes are usually affected, although one eye may be more symptomatic than the other. On days when outdoor allergens are high, stay inside — and save outdoor activities for just after a rain, when fewer allergens fill the air. "Cold compresses around the eyes can be helpful with itching and swelling," says Ogbogu. Jacqueline Jones, 31, of Frankfort, Ky., knows what it feels like to have severely swollen eyes. How Bad Can Swollen Eyes Get? These antibodies cause the body to release histamine — which also causes nasal congestion that often accompanies swollen eyes. Skin testing by an allergist may help identify the inciting allergens. However, if you experience one or more of these symptoms, contact your ophthalmologist for a complete exam. Perennial allergic conjunctivitis is a year-round allergic condition. Treatment will depend on the cause of your conjunctivitis. Hold a cold flannel on your eyes for a few minutes to cool them down. It usually affects both eyes and makes them: The symptoms will not come back if there is no contact. Children who wear contact lenses need to switch to glasses for a while. Reason: They only treat the redness, not the cause. These are eye drops without an A in the name, such as plain Visine. If not, this type of eye drop can be used for added relief. Also, putting a cold wet washcloth on them usually makes the eyes feel better. Older Antihistamine/Vasoconstrictor Eye Drops - 2nd Choice: Dose: 1 drop every 12 hours in both eyes. Most often, eye drops will not be needed. Then put a cold wet washcloth on the itchy eye. Rinse the eyes with a small amount of warm water. What You Should Know About Eye Allergies: Diagnosis of eye allergy never made by a doctor. Discharge on eyelids that does not go away with allergy medicines. Sacs of clear fluid (blisters) on whites of eyes. When to Call for Eye - Allergy. The medical name for this is perennial eye allergies. House dust causes year round, daily symptoms. They can also get in the eyes from the hands. The medical name for this is allergic conjunctivitis. It is also important to avoid line drying your bedding or clothes outdoors if the local pollen counts are high, as pollen can settle on these items. Avoid drying clothes and bedding outside when the pollen count is high. By carefully checking the label for the list of ingredients, you should be able to avoid an allergic reaction. Avoiding damp buildings, damp woods and rotten leaves, cut grass and compost heaps. Regularly wiping surfaces with a damp, clean cloth - avoid dry dusting, as this can spread dust into the air. As with any allergy diagnosis, your doctor will first ask you about the history of your symptoms, Dr. Elliott says. Enzymes in the digestive process break down the pollen-mimicking proteins in raw produce, so the symptoms usually remain local to the mouth. Oral allergy syndrome is usually harmless,” says Hannelore A. Brucker, MD, a member of the American Academy of Allergy, Asthma, and Immunology. People with oral allergy syndrome are likely to experience an itchy mouth or scratchy throat, itchy or slightly swollen lips, and in some cases, itchy ears. Along with other pitted fruits like apricots, cherries, peaches, and plums, apples are associated with birch pollen allergies—as are almonds, carrots, celery, hazelnuts, kiwi, parsley, and soybeans. In the case of oral allergy syndrome, the antibody is against birch pollen, for example, not against apple. All of them are intended for daily use, before and during the pollen season.

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Also known as contact dermatoconjunctivtis cheap 100 mg dilantin overnight delivery, symptoms are usually caused by cosmetics discount dilantin line, eye-drops purchase generic dilantin, or other chemicals that irritate the conjunctiva in those who are susceptible cheap dilantin 100mg otc. The following allergens commonly cause allergic conjunctivitis: People with seasonal allergic conjunctivitis will experience symptoms at certain times during the year, usually from early spring into summer, and sometimes into fall. Symptoms may appear quickly, soon after the eyes come into contact with the allergen. Most people with allergic conjunctivitis have problems with both eyes. Antihistamines may help bring fast relief from symptoms, either as an oral dose or as eye drops. Pink or red eyes are a common symptom of conjunctivitis. Do not put drops in your eyes while wearing contact lenses. Allergic conjunctivitis is commonly caused by a sensitivity to grass and tree pollen, dust mites or animals. 864 (56%) of the patients with eye- and/or eyelid-involvement presented with a positive reaction to at least one of the contact allergens tested. To determine the most important causes of contact allergic reactions on the eyes and eyelids. This may include staying indoors when pollen counts are high, wearing sunglasses to prevent pollens from entering the eyes, reducing the amount of dust present in the home, and cleaning floors with a damp mop instead of a dry sweeper. These types of eye allergies are usually caused by dust, pet dander or other allergens that are often present year-round. The most common type of eye allergy; people affected by SAC experience symptoms during certain seasons of the year. Eye allergies are generally categorized into two types: seasonal allergic conjunctivitis (SAC) and perennial allergic conjunctivitis (PAC). It is this chemical reaction that causes blood vessels inside the eyes to swell, and the eyes to become itchy, red and watery. Decongestant drops shrink blood vessels in your eyes, which eases redness. If your eyes well up when you go outside during spring or summer, you may have seasonal allergic conjunctivitis. Oral tablet form antihistamines are the standard treatment for sore eyes caused by an allergy. Seasonal allergic conjunctivitis: This is really a form of hay fever , in which ocular, rather than nasal, symptoms predominate. Exposure of the eyes to an allergen like pollen , pet dander or mould causes an over-reaction in the immune system. Red, sore, watery eyes are especially common in hay fever, with the conjunctiva becoming inflamed and the tissue around the eyes swollen. Decongestant eye drops can reduce eye redness; they constrict blood vessels in your eyes. Wearing wraparound sunglasses can help reduce pollen contact with the eyes. Affected people may experience hay fever symptoms if they have an allergic reaction to pollen. Symptoms of hay fever can include itchy, red or watery eyes, a runny nose and sneezing. Perennial allergic conjunctivitis occurs throughout the year and is caused mostly by exposure to dust mites, animal dander, or other allergens present in the home or workplace environment. The most common allergens are pollen, dust mites and animal dander. An eye allergy occurs when something you are allergic to comes into contact with your eyes. Allergy eye symptoms are no sight for sore eyes but you can see a whole lot better if you are proactive and opt for the best line of defense and treatment. Allergic conjunctivitis and Allergic blepharitis (eyelid inflammation) are some of the most uncomfortable allergy symptoms We all know what it is like to feel like you have something stuck in your eye. Allergies to Insect Stings (Bee Stings), Mold, Pollen, Sun Reactions of the Skin, Aspirin, Cosmetic, Nickel, Drug, Dust, Chemical and Penicillin Allergy. In order to confirm the possible allergens causing allergic conjunctivitis, some of the following tests can be carried out; Prick test for allergy tests: a small puncture, generally in the inner surface of the forearm, is made, and a drop of allergen is placed. The usual initial symptoms of allergic conjunctivitis include redness, tearing, burning sensation, localized pain and itchiness which are the typical symptoms of allergic conjunctivitis. It is characterized by a recurrent and bilateral eye inflammation, most frequently caused by allergens (any substance that, when in contact with the tissues, induces a state of sensitivity and/or resistance to said substance) such as pollen, pet dander or mites. People with all forms of allergic conjunctivitis develop intense itching and burning in both eyes. Millions of North Americans are affected by allergies, particularly with seasonal allergic conjunctivitis (SAC) which is common during the spring, summer and fall. If home-care does not help, you may need to see a provider for treatments such as eye drops that contain antihistamines or eye drops that reduce swelling. For more severe symptoms of seasonal allergy eyes, please consult your eye doctor. Seasonal allergy eyes are triggered by everyday things like: With eye allergies, you usually see redness and itching in both eyes, instead of in just one eye. Eye allergies, also called allergic conjunctivitis,” are a common eye condition. ZYRTEC® can help minimize itchy allergy eyes, as well as other allergy symptoms. Eye allergies are caused by a reaction to allergens in the air while pink eye is most often caused by bacterial infections and viruses. Some allergy sufferers experience itchy, watery, burning or dry eyes from allergies. If you have persistent eye irritation, such as itchy and watery eyes, it could be caused by an allergic reaction to something in the air. Depending on what is causing your eye allergy symptoms, immunotherapy (allergy shots) can be very effective in providing long-term resistance to the triggering allergens. Over-the-counter antihistamine pills and eye drops are often used for short-term treatment of eye allergy symptoms. Apply saline eye drops to the eyes after being outdoors to wash away allergens from the ocular lining. Symptoms resulting from seasonal outdoor allergens tend to be worse than if your symptoms are due to indoor allergens such as dust mites or pet dander. Indoor allergens such as dust mites and pet dander can also cause eye allergies year-round. People with seasonal allergic rhinitis (hay fever) normally notice their symptoms worsen when they go outdoors on days with high pollen counts. Also called allergic conjunctivitis or ocular allergy, eye allergy occurs when something you are allergic to irritates the conjunctiva. For some people, especially those who are also coping with allergic rhinitis or asthma, allergy shots may eventually eliminate your eye symptoms so that medications are no longer needed. Depending on the severity of your eye symptoms, as well as the presence of other allergic symptoms such as allergic rhinitis, or asthma, many people choose to undergo allergy testing and allergy shots. Decongestant eye drops (with or without anti-histamines) should only be used for short periods of time, as overuse can lead to conjunctivitis medicamentosa (characterized as rebound eye redness/congestion and dependence on the eye drops). Many people with allergic eye disease will receive benefit from oral antihistamines, such as prescription or over-the-counter Claritin (loratadine,) Zyrtec (cetirizine,) Allegra (fexofenadine,) Clarinex (desloratidine,) and Xyzal (levocetirizine.) Older, first-generation antihistamines (such as Benadryl (diphenydramine) or hydroxyzine are also helpful, but are generally considered too sedating for routine use. Vernal keratoconjunctivitis is a severe form of eye allergy most common in late childhood in which the upper conjunctiva take on a "cobblestone" appearance due to enlarged lymphoid follicles. Itching of the eyes is the most common symptom of allergic conjunctivitis.

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