An occasional cough is normal and healthy. A cough that persists for weeks signals an underlying problem.
Here's information about common causes of diarrhea and when to see your doctor.
Fatigue can signal many things. Here are some tips to help you decipher why you're wiped out and to regain your energy.
Runny nose: What's causing your sniffles?
Swollen lymph nodes usually indicate an infection, particularly in children. However, there are many causes, ranging from the common cold to cancer.
Jun. 29, 2012
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