hi i had gone through your query and understand your concerns.
i advise you taking Homeopathic
medicines gives safe and permanent cure for your complaints of corns and without recurrance.
Usually in such cases I will give treatment for my patients in the following manner...take ANTIMONIUM CRUDUM 200 potency two time /day before food/week then wait another week usually gives excellent result like magic.
please consult your local homeopathic physician for correct diagnosis of the case and remedy to fit your complaints. or mail me at firstname.lastname@example.org
wishing you good health