Allergic Reaction: An allergic reaction is an overreaction to a harmless substance. Symptoms and signs of an allergic reaction include hives, rashes, swelling, itching, wheezing, nausea, and even anaphylactic shock in severe reactions. Treatment involves avoiding triggers, taking oral antihistamines, applying anti-inflammatory steroid creams, and using an EpiPen.
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Featured:
Common allergens include trees, mold, dust mites, grasses, pets, and weeds. Symptoms and signs of eye allergies include swelling around the eyes, eye redness, tearing, and mucous production. Treatment of eye allergies may involve eyedrops antihistamines and/or nasal steroids.
Expert Views and News
- Vaginal Birth, Breastfeeding Reduce Allergies, Asthma
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- Clif Bar & Company Recalling 12 of Its Products
- Recall: Tyson Foods Chicken Products
- Recall: Canned Pasta Shells and Spaghetti
- Global EpiPen Recall Now Includes U.S.
- AAP Updates Epinephrine Guides Use for Anaphylaxis
- Genetic Explanation for Frustrating Syndrome
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- Allergy Prevalence the Same, Regardless of Area
- Expert Q&A: Childhood Vaccine Safety
- Scientists Closer to Cat Allergy Cure
- Bullied Over Food Allergies
- Little Insects, Big Allergic Reactions
- Xolair May Treat Milk Allergy in Kids
- Food Allergy Guidelines Out
Allergic Reaction Topic Guide - Visuals
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Allergic Reaction Topic Guide - Medications and Vitamins
Medications:
Epinastine OphthalmicEpinastine is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, wate...learn more »
DesloratadineDesloratadine is an antihistamine that is used to treat the symptoms of allergies, such as sneezing, watery eyes, itching, and runny nose.
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Flunisolide NasalFlunisolide is a steroid. It prevents the release of substances in the body that cause inflammation...learn more »
Fexofenadine And PseudoephedrineFexofenadine is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, wa...learn more »
Triamcinolone (nasal)Triamcinolone is a steroid that prevents the release of substances in the body that cause inflammation...learn more »
FexofenadineFexofenadine is an antihistamine that is used to treat the symptoms of seasonal allergies (hay fever) in adults and children...learn more »
CetirizineCetirizine is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, wate...learn more »
HydroxyzineHydroxyzine reduces activity in the central nervous system. It also acts as an antihistamine that reduces the effects of natural chemical histamine in the b...learn more »
CyproheptadineCyproheptadine is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, ...learn more »
Promethazine (injection)Promethazine is in a group of drugs called phenothiazines (FEEN-oh-THYE-a-zeens). It works by changing the actions of chemicals in your brain.
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Promethazine (rectal)Promethazine is in a group of drugs called phenothiazines (FEEN-oh-THYE-a-zeens). It works by changing the actions of chemicals in your brain. Promethazine...learn more »
Promethazine (oral)Promethazine is in a group of drugs called phenothiazines (FEEN-oh-THYE-a-zeens). It works by changing the actions of chemicals in your brain. Promethazine...learn more »
Cromolyn Sodium (ophthalmic)Cromolyn sodium works by preventing the release of substances in the body that cause inflammation...learn more »
Epinephrine InjectionEpinephrine is a chemical that narrows blood vessels and opens airways in the lungs. These effects can reverse severe low blood pressure, wheezing, severe s...learn more »
PrednisonePrednisone is a steroid that reduces inflammation in the body, and also suppresses your immune system...learn more »
DiphenhydramineDiphenhydramine is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching,...learn more »
Cromolyn Sodium (oral)Cromolyn sodium works by preventing the release of substances in the body that cause inflammation...learn more »
Cromolyn Sodium (inhalation)Cromolyn sodium works by preventing the release of substances in the body that cause inflammation...learn more »
Allergic Reaction Topic Guide – Related Topics
Related Topics:
Antibiotics
Antibiotics are prescribed to individuals to cure disease by killing bacteria. There are over 100 antibiotics. The main classes of antibiotics include penicil...learn more »
Life-Threatening Skin Rashes
Rashes are very common conditions and can have many causes. Most rashes are not dangerous but rather are merely nuisance illnesses. Life-threatening skin rashes...learn more »
Eyelid Inflammation (Blepharitis)
Blepharitis is swelling and/or irritation of the eyelid, resulting from a bacterial infection, inflammation, or allergies. It is the most common eye disease....
learn more »
Family Medical Records
In the event of a medical emergency, it's important for doctors to have access to family medical records. These records should contain information about illness...learn more »
Occupational Asthma
Asthma is a chronic inflammation of the airways caused by external triggers. learn more »
