Keratoderma https://en.wikipedia.org/wiki/Palmoplantar_keratoderma
Keratoderma comprises a heterogeneous group of disorders characterized by abnormal thickening of the stratum corneum on the palms and soles.

Treatment ― OTC Drugs
#Salicylic acid, brush applicator [Duofilm]
#40% urea cream
More information ― English