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Canker sores are small, painful sores inside the mouth. They occur most often on the tongue, gums, or insides of the cheeks.

Seborrheic dermatitis is a common type of rash that causes red, scaly, greasy skin. It occurs on skin that has oil glands, such as the face, scalp, and upper chest.

Hidradenitis suppurativa is a long-term (chronic) skin disease. It causes painful bumps and sores to form around a hair follicle.

Hyperhidrosis is excessive sweating. It's often an ongoing (chronic) condition. Here's what you need to know.

After breast surgery or radiation, fluid may collect and cause swelling in the arm and chest on the side of the treatment. This is called lymphadema. These tips can help you care for yourself after surgery.

Laparoscopic Nissen fundoplication is done to treat gastroesophageal reflux disease (GERD). GERD happens when food or stomach acid backs up (refluxes) from your stomach into your esophagus.

When blood supply is cut off from the brain, cells start to die from lack of oxygen. Within minutes, skills such as reasoning, speech, and movement of the arm, leg, or face may be affected. The type of skills and the amount of loss depend on which part of the brain was affected, and how much tissue was damaged.

An abscess is a sac of pus. A dental abscess forms when a tooth or the tissue around it becomes infected with bacteria. Read on to learn more.

Anxiety can become a problem when it's hard to control, occurs for months, and interferes with important parts of your life. Here are details about anxiety and when you might need to get help.