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Disease

Spontaneous coronary artery dissection (SCAD)

A torn blood vessel in the heart can cause a heart attack. Learn about the diagnosis and treatment of this medical emergency.
Disease

Sprained ankle

Sprained ankle — Injury to a ligament of the ankle can usually be treated with at-home care and appropriate exercises to get you back on your feet.
Disease

Sudden cardiac arrest

This medical emergency involves sudden loss of all heart activity. Learn how fast, appropriate care may help prevent death.
Disease

Sun allergy

Learn more about the causes, symptoms and treatment of this itchy rash that is an allergic reaction to sunlight.
Disease

Takayasu's arteritis

This rare disease that harms the aorta, the large artery that carries blood from the heart to the rest of the body.
Disease

Thoracic aortic aneurysm

Learn about this serious condition in which the upper part of the body's main artery becomes weak and may rupture.
Disease

Thumb arthritis

This common condition can cause pain and make simple tasks hard to do. Treatment may include medicines, splints and, sometimes, surgery.
Disease

Tongue-tie (ankyloglossia)

In this condition present at birth, a band of tissue (lingual frenulum) tethers the tongue to the floor of the mouth, restricting the range of motion.
Disease

Tooth abscess

A bacterial infection at the tip of the tooth root usually occurs from an untreated dental cavity, an injury or prior dental work.
Disease

Total anomalous pulmonary venous return (TAPVR)

In this heart condition present at birth, the lung's blood vessels attach to the wrong places in the heart. Know the symptoms and how it's diagnosed.
Disease

Transient global amnesia

When your memory suddenly disappears, it can be frightening — but transient global amnesia is typically temporary and harmless.
Disease

Transient ischemic attack (TIA)

This short bout of stroke-like symptoms doesn't cause permanent damage. But it may serve as a warning sign of a future stroke.
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