What is john frusciante arm?

As an AI language model, I do not have access to personal information about individuals unless it is publicly available. However, it is known that John Frusciante, former guitarist of the Red Hot Chili Peppers, has a scar on his arm which he obtained while trying to climb a fence and falling onto a piece of broken glass. He has also spoken openly about his struggles with addiction and the impact it has had on his life and music career.