I have black neck and underarms same as my father and these areas are full of wrinkles please suggest me ways to get rid of this blackness?

Acanthosis nigracans: Acanthosis nigricans is a skin condition characterized by areas of dark, velvety discoloration in body folds and creases. The affected skin can become thickened .Most often, acanthosis nigricans affects your armpits, groin and neck. These skin changes typically occur in people who are obese or have diabeteacanthosis nigricans is most common in native americans, blacks and hispanics.