Medically reviewed by William Truswell, MD A lump behind the ear can have many possible causes. The most common include ...

Lumps behind the ear may be caused by many things ... Lumps can vary in size but are generally small- to medium-sized bumps, which may occur anywhere on the back of the ear and can be either ...

This helps to reduce swelling and prevent infection. It makes it effective for treating pimples. You can add water with turmeric and apply it to the lump.