Symptom Checker
What's causing your foot pain? Why does your child's throat hurt? And what should you do about it? Use this guide to discover the most common causes of the most common symptoms. ... [... more]
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Aids/Hiv
AIDS is a chronic, life-threatening condition caused by the human immunodeficiency virus (HIV). By damaging or destroying the cells of your immune system, HIV interferes with your body's ability to effectively fight ... [... more]
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Acute Sinusitis
It's an uncomfortable condition. The common cold virus is the most frequent cause, although other triggers include bacteria or allergies. Most colds resolve with time, but nearly 2 percent develop into acute ... [... more]
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Avian Influenza
Health officials are concerned that a major bird flu outbreak could occur in humans if the virus mutates into a form that can spread more easily from person to person. The grimmest scenario would be a global outbreak ... [... more]
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Bacterial Vaginosis
Bacterial vaginosis. This type results from overgrowth of one of several organisms that are normally present in your vagina, upsetting the natural balance of vaginal bacteria. More than one in six pregnant women in ... [... more]
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Bladder Infection
Cystitis usually begins when bacteria enter the urinary tract through the urethra, the tube through which urine exits your body. From there, bacteria adhere to the bladder wall, and begin to multiply. Less commonly, ... [... more]
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Chronic Sinusitis
Chronic sinusitis can be a miserable condition that significantly impairs your quality of life. If you have chronic sinusitis, you may have difficulty breathing through the nose, experience frequent headaches and ... [... more]
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Common Cold
A common cold is an infection of your upper respiratory tract. It's relatively harmless -- but it usually doesn't feel that way. If it's not a runny nose, sore throat and cough, it's watery eyes, sneezing and ... [... more]
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Ear Infection, Middle Ear
Ear infections are among the most common illnesses of early childhood. Three out of four children have had at least one ear infection by age 3, according to the National Institute on Deafness and Other Communication ... [... more]
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Flu
Anyone can get the flu, but young children, older adults, people with weakened immune systems and those with chronic illnesses are especially vulnerable. If you're at high risk of flu, your first line of defense is ... [... more]
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Hepatitis A
You're most likely to contract hepatitis A from contaminated food or water or from close contact with someone who's already infected -- even if that person doesn't appear sick. Some people who are infected never ... [... more]
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Hepatitis B
Most people infected as adults recover fully from hepatitis B, even if their signs and symptoms are severe. Infants and children are much more likely to develop a chronic infection. Although no cure exists for ... [... more]
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