Photodynamic therapy for the eyes uses lasers and a special medicine that works when exposed to a type of light. It is done to treat age-related macular degeneration (AMD).

Supraventricular tachycardia (SVT) is a type of abnormally fast heartbeat. The heart normally beats 60 to 100 beats per minute. With SVT, the heart beats more than 100 times a minute. It may beat as fast as 250 times a minute.

A pterygium is a type of growth on the eye that is not cancer. Often, it is only a minor problem unless it causes changes in your eyesight. Pterygia (the plural form of the word) are common in people who are exposed to ultraviolet (UV) rays for long periods of time.

Thoracic outlet syndrome is a set of symptoms in the shoulder, arm, or hand. It occurs from a narrowing of the thoracic outlet. This is the space between your collarbone and your first rib.

Primary ovarian insufficiency (POI) is when the ovaries stop working normally before the age of 40. An ovary does not release an egg each month as it should. This can cause symptoms and make it hard to get pregnant.

Premature ventricular contractions (PVCs) are a type of abnormal heartbeat (arrhythmia). They are very common. They can occur in people of all ages from time to time. They usually cause only mild symptoms.

Polymyalgia rheumatica (PMR) is an inflammatory condition that can cause aching and stiffness. It tends to affect the neck, shoulders, and hips. The aching and stiffness are usually worse in the morning.

A shoulder separation is when part of the shoulder blade separates from the collarbone. It's most often caused by an injury that damages the ligaments around the shoulder joint.

Pericardiocentesis is a procedure to remove fluid that has built up in the sac around the heart. Read on to learn details about what to expect before, during, and after this procedure.

Pericardiectomy is a surgery to remove part or all of the sac around the heart. This lets the heart move more freely.