A member asked:

My friend had a wart frozen off with liquid nitrogen on the heel of her foot. it turned into a loonie size blister. then, turned black and hardened. it has been 2 months now turning 3 months. should she be concerned?

A doctor has provided 1 answer

Eschar : It appears that after cryo ulcerated area did not heal with primary method of normal skin. Instead it made a necrosed area, black and thick, an eschar. A doctor will need to help by removing this so normal skin can grow. It may be infected sometimes and may require antibiotics. I hope it helps.

Answered 2/22/2021

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For wart treated with liquid nitrogen, what happens if it blisters?

5 doctors weighed in across 3 answers