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Disease

Sleep disorders

Common types include insomnia, sleep apnea, restless legs syndrome and narcolepsy. Other types include nightmare disorder and sleep terrors.
Disease

Anal fistula

An infected anal gland can sometimes cause a tunnel to develop between the skin and the anus. Learn about symptoms and diagnosis for this painful, but treatable, condition.
Disease

Vasovagal syncope

Learn about what causes a brief loss of consciousness and when to see a healthcare professional if this happens to you.
Disease

Fibromyalgia

This condition affects the way the brain processes pain signals. It can cause widespread pain, fatigue and other symptoms. Learn what treatments can help.
Disease

Thrombocytopenia (low platelet count)

Problems with how blood clots can lead to excessive bleeding or blood clotting. Learn about the risks and treatments for a low blood platelet count.
Disease

Inflammatory bowel disease (IBD)

Long-lasting diarrhea and belly pain could be caused by inflammatory bowel disease, also called IBD. Learn about IBD causes, diagnosis and treatment.
Disease

Anal fissure

Learn what causes a tear in the anus and how to prevent or treat this often painful condition.
Disease

Black hairy tongue

This condition gives the tongue a dark, furry look. It results from a buildup of dead skin cells on the many tiny, rounded bumps on the tongue's surface.
Disease

Pediatric white blood cell disorders

Many factors can cause too few or too many white blood cells. Find out more about these conditions in children.
Disease

Retinal detachment

Eye floaters and reduced vision can be symptoms of this condition. Find out about causes and treatment for this eye emergency.
Disease

Ascariasis

Learn more about the causes, treatment and prevention of this roundworm infection.
Disease

Tracheomalacia

Collapse of the windpipe happens most often in infants, but it can occur at any age. This condition makes it hard to breathe and can be life-threatening.
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