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You seem to have developed either a corn
or a palmar wart
Since the cause of discomfort in both cases is the thickened layer of horny skin between the nerve-bearing tissues and the ground, simple nontraumatic removal of this material is a good alternative.
This can be accomplished with a pumice stone or some other type of abrasive material after the sole of the foot has been soaked in warm water for 20 minutes to soften the wart.This procedure is painless and bloodless .
Also carefully paring with a corn or callus
trimmer is a reasonable alternative
Another technique to remove the excess keratin is an over-the-counter salicylic acid
It can take several months to get rid of a large one using these treatments.
Warts can spread, so monitor your hands closely and treat warts when they are small .
But before starting any treatment, it would be better if you can get yourself assessed by a dermatologist
as distinction between the above two conditions is very important.
Wishing you speedy recovery
Dr Geetika Paul