In-depth

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.

Fatigue

Fatigue can signal many things. Here are some tips to help you decipher why you're wiped out and to regain your energy.

Headache

Most headaches aren't caused by a serious illness, but some could be a sign of a life-threatening condition.

Health issues for gay men

Health issues for lesbians

Joint pain

Joint pain can have many causes and can often be treated at home.

Leukoplakia

Smoking and other forms of chronic irritation to your mouth's mucous membranes can lead to leukoplakia — thick, white patches on your gums or inner cheeks.

Liver function tests

Find out how this battery of blood tests helps your doctor diagnose and monitor liver disease.

Muscle pain

Muscle pain can occur just about anywhere in your body, and there are lots of potential causes.

Shortness of breath

Shortness of breath can be frightening. Most of the time, a heart or lung condition is the cause.

STD testing

Swollen lymph nodes

Swollen lymph nodes usually indicate an infection, particularly in children. However, there are many causes, ranging from the common cold to cancer.

Thalidomide: Research advances in cancer and other conditions

Thalidomide is infamous for the birth defects it caused. So why are doctors still prescribing it?

Urinalysis

Urinalysis can be used to assess your overall health, detect a wide range of disorders, or monitor a medical condition or treatment.

May. 20, 2014

You Are ... The Campaign for Mayo Clinic

Mayo Clinic is a not-for-profit organization. Make a difference today.