Chagas disease is caused by a parasite. It is transmitted to people through the feces of insects. It is common in South and Central America and Mexico.

A liposarcoma is a rare type of cancer that develops in your fatty tissue. This type of tumor can grow anywhere in your body. Common places include your abdomen, thigh, and behind your knee.

Lichen planus is a common disease that causes inflammation (swelling and irritation) on your skin or inside your mouth. On your skin, lichen planus causes a rash that is usually itchy. Inside your mouth, it may cause burning or soreness.

A glioma is a type of brain tumor that originates from glial cells, which help support the function of the other main brain cell type—the neuron.

Buerger's disease causes a tightening, or a blockage, of the blood vessels in your feet and hands. Read on to learn more.

Detailed information about Zollinger-Ellison syndrome (ZES), a rare digestive disorder.

Few activities in life seem as natural as eating and drinking. We do them every day without giving them much thought. Yet, what happens inside your body after you eat is an interesting and complex process.

At 20 feet long, your small intestine is the longest part of the human digestive system. Most of the digestive process takes place there.

Primary sclerosing cholangitis (PSC) is a rare disease that attacks the bile ducts. The word sclerosing means scarring. In PSC, your bile ducts become scarred and slowly narrow until bile backs up into your liver and starts to damage it. Read on to learn more.

The liver is the largest organ in your body. At about 3 pounds and about the size of a football, it performs many functions essential for good health and a long life.