Learn how this cancer differs from other lymphomas. Find out about risk factors and treatments, such as chemotherapy, radiation and bone marrow transplant.
Disease
Horner syndrome
Find out about Horner syndrome, an interruption in nerve signals from the brain to the eye and face on one side of the body.
Disease
Hot flashes
Learn about this most common symptom of stopping periods and ways to get relief, including hormone therapy and natural treatments.
Disease
Huntington's disease
This rare disease causes an early decay of nerve cells in the brain. Learn about its symptoms and how treatments may help.
Disease
Hurthle cell cancer
Learn about this rare type of aggressive thyroid cancer. Treatment typically involves surgical removal of the thyroid gland.
Disease
Hydrocele
Find out more about the symptoms, causes and treatments for this swelling in the scrotum.
Disease
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.
Disease
Hydronephrosis
This condition involves swelling of one or both kidneys. Learn the causes, symptoms and treatments.
Disease
Hypercalcemia
This condition can weaken bones, create kidney stones, and affect how well the heart and brain work. Treatment depends on the cause.
Disease
Hypereosinophilic syndrome
Hypereosinophilic syndrome (HES) is a disorder of certain white blood cells that can cause life-threatening damage to your organs.
Disease
Hyperglycemia in diabetes
Hyperglycemia in diabetes can occur for many reasons. Know the causes, symptoms and treatments of high blood sugar and when to get emergency help.
Disease
Hyperhidrosis
Learn more about causes, symptoms, treatment and self-care tips for this condition that causes heavy sweating unrelated to heat or exercise.