Partial or complete hair loss is called alopecia. It usually occurs on the scalp, but can also occur elsewhere on the body, including the eyebrows. The patterns of alopecia can vary as well.

Pronounced ghee-lan bar-ray, Guillain- Barré is a rare and serious condition of the peripheral nervous system.

Glaucoma is characterized by a loss of peripheral vision, usually in association with a build up of fluid pressure inside the eyeball, which can damage and in some cases completely destroy the retina and optic nerve.

A rare type of sarcoma found in the digestive system, most often in the wall of the stomach, some Gastrointestinal Stromal Tumor (GISTSs) are not cancerous (they are benign), while others can become cancerous if not treated.

Hangover is not a health condition, but feelings of discomfort that follow excess drinking of alcohol the night before.

A disorder that affects the thyroid, Hashimoto’s disease is also known as chronic lymphocytic thyroiditis.

Headaches are the number one health complaint, and affect nearly everyone at some point in their lives.

Hearing disorders affect nearly 30 million people in the United States. In addition to causing problems with hearing, some hearing disorders can also cause other problems, especially difficulty maintaining balance and proper equilibrium.

Heart cancer (primary cardiac tumor) is cancer that arises in the heart.

Heart, or cardiovascular, disease is responsible for nearly half of all deaths in the United States each year, killing nearly one million people each year, and afflicting over 60 million others.