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Main > Specialty Areas > Immunology >
Allergies
Symptoms of Allergies Different manifestations of allergic reactions include rhinitis (hay fever), conjunctivitis, nettle-rash (hives), angioedema, dermatitis, asthma or anaphylaxis. The classical symptoms of the allergic conjunctivitis are eye irritation, teary eyes, itchy or burning eyes or hypersensitivity to light. Children usually develop allergic diathesis in response to various food allergies. As far as allergies are concerned, pregnancy may lead to completely unpredictable scenarios. An allergy may disappear altogether, or disappear initially and reoccur, or occur in a milder form than usual. Skin manifestations of allergies usually come in the form of hives, dermatitis and angioedema (which is characterized by the development of large welts below the surface of the skin). Probably the worst kind of an allergic reaction and a true medical emergency is the anaphylaxis. It is a very severe allergic reaction that usually occurs in response to certain medications, foods (such as nuts) or insect bites (the culprits are usually wasps or bees). Anaphylactic shock is characterized by a sudden general itchiness, which is quickly followed by difficulties breathing and a shock that is caused by an abrupt loss of arterial pressure. Other signs include weak pulse, paleness and excessive sweating. Sometimes one of the symptoms is nettle-rash. A severe anaphylactic shock may result in the swelling of the lungs and the brain, which quickly leads to death. Anaphylactic shock is a medical emergency: call 911 as soon as you see a person exhibiting its symptoms. Read more about treatments for anaphylactic shock and other allergy types in the Treatments section.
For more information about various allergy types please consult the Links section.
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