Carly Simon reveals Parkinson's diagnosis and skin cancer treatment

American singer Carly Simon said on Monday that she has been diagnosed with Parkinson's disease and has also been treated for skin cancer.

Simon, 83, known for songs including "You're So Vain," said in a statement that she had "been learning how to live with Parkinson's disease." She said it had taken time to understand the diagnosis, adjust to it and decide how much to say publicly.

Simon said her problems began with arthritis in both knees and one hip, followed by three joint replacement surgeries. She said she initially thought her difficulty walking was part of recovery from those operations.

She also said she was treated for a facial basal cell carcinoma. "The cancer was removed, but the surgery affected my appearance and made me more self-conscious about being seen in public," Simon said.

Simon said she had found refuge in music and had begun recording "Comes in Waves," her first new collection of original tracks since 2008. The album is due to be released on August 14.

Parkinson's disease is a chronic degenerative neurological disorder that affects the body's motor system and can cause shaking and other movement difficulties. About 10 million people worldwide have the illness, according to the Parkinson's Foundation.