Medically reviewed by Sukaina Hasnie, MD Key Takeaways A lump behind the ear can be caused by swollen lymph nodes, which are common and usually harmless.Most lumps behind the ear are benign and can be ...

Sebaceous cysts are benign, fluid-filled bumps beneath the skin. Although some people seek sebaceous cyst removal for cosmetic purposes, the lesions do not typically cause health problems or require ...