Jennifer Grey's scar is from cancer treatment.
She had four neck surgeries. One of these surgeries involved inserting a plate in her neck, while she had other surgeries to remove a cancerous thyroid.
As per ABC News, Grey suffered a severe neck injury after a serious car accident in 1987, and has suffered from chronic pain ever since.
Jennifer Grey is an American actress, best-known for her role as Frances "Baby" Houseman in the 1987 hit film Dirty Dancing. After a lull in her career, she made a comeback in the reality show Dancing With the Stars (2010) where she was crowned the winner.
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