Dermatology Questions? Ask an Online Dermatologist.
Can you attach the photos here? Any symptoms? When did it start? Are you aware of anything which might have triggered it? Any medical problems? Any surgeries? Any medications? Any family medical history?
It seems to be congenital melanocytic nevus (benign). https://www.dermquest.com/expert-opinions/clinical-updates/2012/dermoscopic-detection-of-melanoma-on-the-palms-and-soles/