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My 13 year old son has been biting his nails since he was about 6 years old..I have tried everything to get him to stop. I noticed the other day, his nails were blackBlack cohosh Black draught Black haw with lines in them...Anybody know anything about this?
How is your son? Are there other symptoms present? Nail biting can cause trauma to the nails. Nail biting is a main cause of acute paronychia, a type of infection in which bacteria get underneath the tissue at the side of the nail and cause swelling and irritation. On the other hand, a subungual hematoma appears dark red under the nail. Nail injuries can be noticeable until the damaged nail grows out, which usually in about two months. If it persists, it is best that you have him examined by your doctor for proper evaluation. Take care and do keep us posted.