Singer Carly Simon has been diagnosed with Parkinson's disease, a progressive disorder. She has spoken about her experience with the condition, stating it has taken time to understand and adjust to the diagnosis. Further details about Simon's diagnosis and her battle with the disorder are available from People, who obtained a letter from the singer.

Information about Simon's condition is limited, but it is known that she has been open about her struggles with Parkinson's disease, describing it as unpredictable.