I am asking, this question for a friend, since I am currently trying to find a cause to this problem. Well, some months ago she got her ingrown toenail removed. Since then it has healed, it looks ugly, but healed, nonetheless. She has been telling me that now she has been growing double toe nails, which I have read could be caused from trauma to the nail. However, after she trimmed her nails the other day she found a bubble. I examined it myself to see what exactly she was talking about. I found a bubble that had started growing under her nail bed, and from the top of the nail it looks white. I couldn't tell if it was infected or not. She said that she had popped it and only blood came out. I was wondering if anyone could leave any insight on what the bubble under her toenail might be, and if we need to have it checked out.
Thank you to anyone who provides any answers/suggestions.