Abscess If you notice a painful bump on the roof of your mouth, it could be an abscess—an infection that forms when bacteria ...

If the lump is due to acne, pressing on it may cause pain. A cyst can occur anywhere in the skin, including behind the ear. Skin cysts are fluid-filled sacs. They form a raised, dome-shaped area ...

Lumps can vary in size but are generally small- to medium-sized bumps, which may ... bony protrusion behind the ear, which is called the mastoid. It may cause pus-filled cysts to develop.

Boils that form in or around the ear can be painful and ... or "fluctuant," meaning it contains fluid inside. If you or someone else can safely examine the bump, look for signs like swelling ...

This article discusses the causes of itchy, clear fluid-filled bumps. It also examines the associated symptoms and treatments and explains when to contact a doctor. Itchy bumps containing clear ...

Blisters are fluid-filled bumps that form under the epidermis layer of your skin. They usually appear on your hands and feet. A blister on your foot happens when something like an ill-fitting shoe ...

A ganglion cyst is a round, fluid-filled lump of tissue that usually appears along tendons or joints. It typically occurs on the wrist or hand, but it can also appear on the ankle or foot.

You can pop acne and release the pus. HS bumps break open on their own and release a foul-smelling liquid. These are small fluid-filled sacs on the skin. The fluid inside is white or yellow ...