gonzette

My 12 year son has OCD/TS/ADHD. He is taking medications that are working fairly well with his tics and obsessions, but he still bites and picks at his nails. His thumbnails are painful and almost gone. We have tried covering his nails with tape and band-aids, but he picks at that. Does anyone have any suggestions? He told me today that all he wants for Christmas this year is to have his nails back.