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This is a common allergic reaction in which itchy red rash or welts appear on skin.
They subside without any scar formation but may recur.
This can appear anywhere in the body and vary in size from small, pimple like spots to raised patches.
Sometimes they disappear immediately but sometimes last for days or even weeks.

Causes

Sign and Symptoms

Raised red usually itchy welts of varying sizes Swelling under the skin that burns, often around eyes rarely on hands and feet and rarely in throat and genitals.
Rapid onset.

Do's and Dont's

Avoid food which you think causes these problems.
Allergy tests can be done but they are usually inconclusive .
Commonly the food which people are allergic to are fish, milk, products, eggs, nuts, chocolate, strawberries, tomatoes. Cold compresses help in relieving the symptoms.
Avoid crowded places.
Avoid smoke, house paint, house dust, agarbattis, mosquito repellents Relieve stress by daily meditation and yoga.
Treat infection with regular medication from a doctor.
Avoid exposure to severe heat and cold.
Avoid drugs which cause these problems for you.
Consult your doctor immediately.
Burning and itching develops in your throat.
After an insect bite or sting if you develop dry throat,fever, cough and difficult breathing.
If you have recurring bouts of hives lasting for a longer time.