Hyperventilation syndrome is a pattern of breathing where you breathe more quickly and deeply than normal. This can be very upsetting. Here's what you need to know.

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

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

Heart palpitations are a symptom. It's the feeling you have when your heartbeat seems to be racing, pounding, skipping, or fluttering. Learn about what causes them and how they're treated.

Folliculitis is a skin condition that affects the hair follicles. It's often found on the neck, face, and scalp. Learn about causes, symptoms, and treatment.

First-degree heart block is a condition where the wiring of the heart is slow to send electrical signals for the heartbeat. Learn about its causes, symptoms, and treatment.

Tumor excision is surgery to remove a tumor. Frozen section is a tool that can be used during surgery. It helps to determine how much of a tumor needs to be removed and that the margins are clear of dangerous cells.

An epidermoid cyst is a small abnormal growth in the top layers of the skin. These cysts grow slowly, and they can grow anywhere on the body. Learn about causes, symptoms, and treatment.

This sheet will help you learn what to expect after your outpatient surgery. It covers medicines, recovering at home, and follow-up care.

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.