This microscopic organism is a parasite that can live in your digestive system. Whether it causes digestive problems isn't clear.
Disease
Colon cancer
Find out about symptoms and causes for this cancer that starts in the large intestine. Learn about treatment options, including minimally invasive surgery.
Disease
Thyroid cancer
Learn about thyroid cancer diagnosis and treatment, including thyroid surgery, radioactive iodine and thyroid hormone therapy.
Disease
End-stage renal disease
When kidneys no longer function well enough to meet a body's needs, treatment involves kidney dialysis or kidney transplant.
Disease
Nightmare disorder
Nightmare disorder involves disturbing or scary dreams that awaken you, causing distress or preventing adequate sleep.
Disease
Ganglion cyst
These fluid-filled, noncancerous lumps most often appear on wrists, hands or feet.
Disease
Bunions
This bony bump forms on the joint at the base of the big toe. Learn more about the causes and treatments of this condition, which sometimes can be painful.
Disease
Patellar tendinitis
This common knee injury affects the tendon that stretches from the kneecap to the shinbone.
Disease
Sprains
A sprain is a stretching or tearing of ligaments — the tough bands of tissue that connect two bones together in your joints. Ice and elevation can help.
Disease
Infertility
Find out about the challenges of not being able to get pregnant. Learn the causes, risk factors, and treatments including insemination and in vitro fertilization.
Disease
Endometriosis
Learn about endometriosis, including possible treatments for this condition that can cause pain and sometimes infertility.
Disease
Vaginitis
Inflammation of the vagina can result in discharge, itching and pain. Recognize signs and symptoms and learn when to seek treatment.