Featured Questions
These questions and answers were chosen by the WebMD Editorial Staff.
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Most people who have narcolepsy have low levels of hypocretin. This is a chemical in the brain that helps promote wakefulness. What causes low...
63 of 73 found this helpful
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Mitochondrial myopathies are a group of neuromuscular diseases caused by damage to the mitochondria ‑‑ ‑small, energy‑producing structures that serve...
10 of 11 found this helpful
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In the United States, the flu season usually occurs from about November until April. Officials have decided each new flu season will start on Oct. 4...
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The treatment of any form of bursitis depends on whether or not it involves infection. Bursitis that is not infected (from injury or underlying...
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Although it’s normal for testosterone levels to drop as men age, low testosterone can affect a man’s health. In many ways, testosterone is the stuff...
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Anterior cruciate ligament (ACL) injuries are caused when the knee is straightened beyond its normal limits (hyperextended), twisted, or bent side to...
143 of 152 found this helpful
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This is a low‑calorie diet based on The Biggest Loser pyramid of 4‑3‑2‑1 (four servings of fruits and veggies; three of lean protein; two of whole...
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Symptoms of colon cancer are numerous and nonspecific. They include fatigue, weakness, shortness of breath, change in bowel habits, narrow stools...
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About 20% of women have some bleeding during the first 12 weeks of pregnancy. Possible causes of first trimester bleeding include: Implantation...
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In caring for patients with chest pain, the doctor distinguishes whether the pain is related to a lack of oxygen to the heart muscle (as in angina...
157 of 173 found this helpful
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Symptoms of celiac disease vary from person to person. Symptoms may occur in the digestive system or in other parts of the body. Digestive symptoms...
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Prostate cancer affects mainly older men. Four out of five cases are diagnosed in men over 65, but less than 1% in men under 50. Though rare...
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Excessive production of gas by bacteria is a common cause of intermittent abdominal bloating/distention. Bacteria can produce too much gas in three...
177 of 195 found this helpful
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AIDS stands for Acquired Immunodeficiency Syndrome.Acquired – means that the disease is not hereditary but develops after birth from contact with a...
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Home treatment may relieve symptoms of pain and pressure associated with short‑term (acute) sinusitis. Home treatment may improve drainage of mucus...
63 of 66 found this helpful
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