2 doctors weighed in:

Tiny blood blister under toenail- could it be problematic?

2 doctors weighed in
Dr. Henry Tseng
Podiatry
1 doctor agrees

In brief: 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.

In brief: 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.
Dr. Henry Tseng
Dr. Henry Tseng
Thank
Read more answers from doctors