Dear patient. It is a mole. But this is a harmless one. When a mole suddenly starts growing , there is a change in colour, there is some symptom developing in it, or it bleeds on touch.. only then you should get a small test done called biopsy. Usually the moles are best left untouched. We advise surgical removal or by radiocautery or laser only if it is of great cosmetic concern. Hope you are now relieved. Take care.