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Hypoglycemia
Low blood sugar can cause uncomfortable symptoms, such as dizziness and confusion, and can quickly become serious if left untreated.
Hydrocephalus
Learn about this potentially fatal condition that causes fluid buildup in the brain. It can cause a range of symptoms, from headaches to poor balance.
Hydrocele
Find out more about the symptoms, causes and treatments for this swelling in the scrotum.
Hepatitis B
This highly contagious virus can cause long-lasting problems if it goes untreated. Learn about the symptoms, treatment and prevention of this serious liver infection.
Hepatitis A
This contagious liver infection is caused by a virus. Learn more about its symptoms, treatment and prevention, including the hepatitis A vaccine.
Hemochromatosis
This liver disorder causes your body to absorb too much iron from the foods you eat. Learn about symptoms, causes and treatment for this condition that usually runs in families.
Heavy menstrual bleeding
Learn about the causes and treatment of heavy menstrual periods.
Heart arrhythmia
Learn about common heart rhythm disorders that can cause your heart to beat too fast, too slow or irregularly.
Glioma
Gliomas are the most common brain tumors in adults. Learn more about diagnosis and treatment, including innovative research to find new therapies.
Glaucoma
Regular eye exams may catch glaucoma early and save your eyesight. Find out about symptoms and treatment for this vision-stealing eye disease.
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