6 doctors weighed in:

What causes an ingrown toenail after surgery to go black on the border of the toenail left?

6 doctors weighed in
4 doctors agree

In brief: Chemical burn...

or dried blood from the procedure is the most likely culprit

In brief: Chemical burn...

or dried blood from the procedure is the most likely culprit
Dr. Richard Taddeo
Dr. Richard Taddeo
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In brief: Chemical

They probably used either phenol or sodium hydroxide to kill the matrix (nail root) in the corner, preventing another ingrown toenail in the future.
It is usually applied with a cotton-tipped applicator (q-tip). It actually delivers a chemical burn, and some of it may have gotten on the border of the healthy nail--it should be fine, and it will probably fade away over time...

In brief: Chemical

They probably used either phenol or sodium hydroxide to kill the matrix (nail root) in the corner, preventing another ingrown toenail in the future.
It is usually applied with a cotton-tipped applicator (q-tip). It actually delivers a chemical burn, and some of it may have gotten on the border of the healthy nail--it should be fine, and it will probably fade away over time...
Dr. Jeffery VanYperen
Dr. Jeffery VanYperen
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