The patches that are tan, brown and black are considered moles or beauty mark. Moles are typically harmless but if their DNA gets damaged, it can cause them to turn cancerous. Moles can appear anywhere on the body .

It is recommended to consult
a surgeon if  

• It draws unwanted attention.
• Irritation on the skin due to friction with clothing, products or other skin issues
• If the color, size of shape changes rapidly
• If it itches, bleeds or both.

Moles, particularly non-cancerous ones, can be easily removed with a simple and straight forward procedure. Moles can be removed surgically, burned or shaved . Surgically removing a mole will result in a scar but the scar will fade overtime with age and the type of surgery.