WHAT YOU SHOULD
KNOW
Hives, known medically as urticaria (UR-tih-KARE-e-uh),
is an allergic reaction appearing on the skin. The problem may
disappear quickly or last for months or
years.
Causes
The reaction can be caused by
medicines, pets, foods, insect bites, or infections. Cold,
heat, sunlight, exercise, and water may also produce hives in
susceptible individuals. Hives tend to run in
families.
Signs/Symptoms
The reaction produces red, itchy,
swollen bumps called wheals that quickly change in size, shape,
and location. The wheals may come and go in minutes or last for
hours. In some people, they are accompanied by more serious
allergic symptoms. Hives cannot be spread from person to
person.
Care
Medicine may relieve the itch and
irritation and prevent more hives from developing. If you
suffer violent allergic reactions, you may need to keep an
emergency medicine kit with you at all times.
WHAT YOU SHOULD DO
-
If you know what causes the hives, avoid whatever
brought on the attack. Your doctor may suggest that you see
an allergy specialist.
-
If your doctor prescribes medication to relieve
itching and rash, take it exactly as directed. You may use
an over-the-counter antihistamine until the hives are
completely gone for 24 hours. Do not take any medications,
including aspirin, laxatives, vitamins, antacids, pain
killers, or cough syrups, without first checking with your
doctor.
-
Apply cold compresses to the skin or take baths in
cool water. Don't take hot baths or showers; the warmth
will make the itching worse.
-
Wear loose fitting clothing; avoid tight underwear.
Any skin irritation may trigger another
attack.
Call Your Doctor If...
-
You still have a lot of itching after taking medicine
for 24 hours.
-
You develop a high temperature
-
You have any pain or swelling in your
joints.
-
The condition lasts more than 1
week.
-
You develop new, unexplained
symptoms.
Seek Care Immediately If...
-
You have the following symptoms during an attack of
hives: swollen lips or tongue, difficulty breathing or
swallowing, or abdominal pain. These may be the first signs
of a life-threatening allergic reaction.
THIS IS AN EMERGENCY. Call
O (operator) or
911 for medical help.
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