Tiny blood blister under toenail- could it be problematic?

Nail blood blister. It is known as a sublingual hematoma which is common when you wear shoes too tight or have something drop on your toe or kick into something. It's painful initially but will grow the length of the nail as your nail grows and become painless, harmless unless it looks very aggressive. If you are unsure, if it's painful a podiatrist can poke a hole in the nail plate to drain it to relieve pressure.

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