In-depth

Abdominal pain

Find out what causes different types of abdominal pain.

Allergy skin tests

Itching, sneezing and swelling: Find out what's causing your allergy symptoms.

Anaphylaxis

Anaphylaxis is the most serious type of allergic reaction. It often occurs rapidly after exposure to an allergen and may be life-threatening.

Cough

An occasional cough is normal and healthy. A cough that persists for weeks signals an underlying problem.

Diarrhea

Here's information about common causes of diarrhea and when to see your doctor.

Hives and angioedema

Hives and angioedema — Comprehensive overview covers symptoms, causes, treatment of these common allergic disorders.

Runny nose

Runny nose: What's causing your sniffles?

Watery eyes

Tearing that goes beyond a happy or sad moment can stem from a variety of causes, from hay fever to more serious conditions.

Aug. 07, 2014

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