Left thumb nail problem, see figure for details

Sep 15 20213 people replied
Description Of Condition:

It started in May 2021, probably because I was wearing military training boots for military training, such as running and kicking, plus the toe of the shoe is relatively hard, sometimes the toe will dislike up.At first it was red, I didn't care much but after several months I haven't seen any improvement and there seems to be a gap between the nail and the flesh.Please see the photos for details. I hope a doctor can give some answers and advice on how to deal with it.

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