Leptospirosis also known as, Weil's disease.

Ledderhose's disease is the equivalent disease to Dupuytren's disease, which affects the hand and causes bent hand or fingers.

Lewy bodies result in the death of nerve cells.

Laron Syndrome is an uncommon genetic disease that causes humans to be short.

Legionellosis takes two distinct forms.

Lemierre's Syndrome is an extremely rare disease which has tentatively been linked as a having tongue piercing as a potential trigger.

LCH within the abdomen may cause tummy problems (diarrhea) and liver problems, including possible jaundice.

Li Fraumeni syndrome has been of large importance to the understanding of the genetics and molecular biology of cancer. Treatment

Lichen sclerosus (LS) also known as white-spot disease.

Lipodystrophy also looks a bit like wasting, which used to be a common problem in people with AIDS. The most grave of the lipodystrophy related side effects seems to be heart problems caused by high f...

Liposarcomas usually starts as a painless, swelling in the soft, non-bony, tissues. Signs of Liposarcoma weight loss and emaciation and abdominal pain.

Long QT syndrome affects about one in 7,000 people. People with this syndrome may show prolongation of the Q-T interval during physical exercise, intense emotion (such as fright, anger or pain) or whe...

Lymphedema may be inherited (primary) or caused by injury to the lymphatic vessels (secondary).

Lymphocytic colitis, a subtype of microscopic colitis.

 Lymphoma is one of the most common causes of death from cancer in the United States.