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Everyone has gas. It may be painful and embarrassing, but it is not dangerous. Learn what causes it, the symptoms, how it's diagnosed, and how it's treated.

Detailed information on the most common types of digestive disorders, including appendicitis, Barrett's esophagus, celiac disease, constipation, crohn's disease, diarrhea, diverticular disease, gas, gastritis, gastroesophageal reflux disease (GERD), gastr

Body dysmorphic disorder (BDD) is a mental health problem. If you have BDD, you may be so upset about how your body looks that it gets in the way of your ability to live normally.

Angina pectoris is chest pain or a feeling of chest discomfort that occurs when a part of your heart doesn't get enough blood and oxygen. Learn more about angina, including causes, risks, symptoms, diagnosis, treatment, and prevention.

Dry skin is a very common skin condition. It can make your skin feel irritated and itchy. Dry skin often worsens in the winter when the air is cold and dry. Bathing often also makes it worse. With no treatment, dry skin may become flaky or scaly.

Cold sores are small blisters around the mouth, caused by the herpes simplex virus. They are sometimes called fever blisters. The most common strain of the virus causing cold sores is herpes simplex virus 1. It can be spread by kissing or sharing eating utensils or even sharing towels.

This test measures the number of platelet cells in your blood. It can give your doctor valuable information about how well your blood clots stop bleeding, how well your bone marrow is working, and diseases that affect your platelet count.

This test looks for substances called porphyrins in your urine. If high levels are present, you may have a disease that affects the way the hemoglobin in your blood works.

This test is done to find out if you have abnormal proteins in your blood. They can be a sign of rheumatoid arthritis, lupus, or Raynaud's syndrome, among other illnesses.