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Disease

Gangrene

A severe bacterial infection or lack of blood flow can cause body tissue to die. Know the warning signs and symptoms of this life-threatening condition.
Disease

Pulmonary edema

Get more information about the causes of this potentially life-threatening lung condition and learn how to treat and prevent it.
Disease

Viral hemorrhagic fevers

Learn about the symptoms, treatment and prevention of these sometimes deadly diseases.
Disease

Common cold

This common illness of the nose and throat causes a stuffy or runny nose, sore throat, and cough.
Disease

Canker sore

Canker sore — Learn about the causes, treatment and prevention of this painful mouth sore.
Disease

Chronic cough

A cough that lasts for weeks could be caused by smoking, postnasal drip, asthma, acid reflux, respiratory infections, COPD or another underlying problem.
Disease

Color blindness

Is it red or is it green? Learn more about what causes this common eye condition and how to tell whether you can distinguish between certain shades of color.
Disease

Eye floaters

Many people over age 50 experience eye floaters. Learn more about this common problem, including causes, other risk factors and treatment options.
Disease

Primary progressive aphasia

Find out more about this type of dementia that affects the speech and language areas of the brain.
Disease

Medication overuse headaches

Using medicines that ease headache pain too often can start causing headaches. Learn about prevention and treatment.
Disease

Tension headache

These common headaches can be triggered by stress. Healthy habits and medicines can help manage them.
Disease

Peripheral neuropathy

Learn what may cause the prickling, tingling or numb sensations of nerve damage and how to prevent and treat this painful disorder.
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