Diseases and Conditions

Labyrinthitis is a condition that affects a part of the inner ear called the labyrinth. When it is swollen, you…

Lactose intolerance means your body cannot tolerate the sugar in milk and other dairy products.

The protein in rubber latex can cause an allergic reaction in some people. This reaction can range from sneezing to…

Leprosy is a chronic infection caused by Mycobacterium leprae bacteria. If left untreated, it can cause deformities of the hands…

Leukemia is cancer of the white blood cells. There are 4 main types that have different symptoms and treatments.

Lichen planus is a type of rash that forms on your skin, on genitalia, or in your mouth. It is…

Lichen sclerosus is a type of skin condition. It often affects your genital or anal areas, but you can get…

Lipomas are benign (not cancerous), slow-growing tumors that come from fat cells. They are usually round, moveable lumps under the…

Low back pain is common. But you can learn to prevent it or reduce the frequency of pain.

As the lumbar spinal canal narrows (stenosis), the nerves that go through it are squeezed, causing back pain, leg pain,…

Lung cancer is abnormal growth of cells in the lungs. It is one of the most common forms of cancer…

Lupus is a disease that causes your immune system to become overactive and attack healthy cells and tissue. Lupus can…

Lyme disease is a bacterial infection spread by ticks. It can cause fever, joint and muscle aches, and a “bull’s-eye”…

Lymphedema is a condition often caused by cancer treatment or surgery. It results in swelling of the lymph nodes located…