Lead extraction is the removal of wires from your heart. The wires are part of an implanted cardiac device. This sheet tells you what to expect before, during, and after the procedure.

Laser photocoagulation uses a laser to seal off abnormal blood vessels in your eye. This treatment can’t restore eyesight that you already have lost. But it may slow down the damage to your central vision.

Sacral nerve stimulation helps treat bladder problems caused by diseases of the nervous system. Before sacral nerve stimulation is done, you need a trial or test procedure to see if it will work. This is called percutaneous nerve evaluation (PNE). Read on to learn the details.

Atrial flutter is a type of arrhythmia. It causes the heart to beat faster than normal. Atrial flutter can increase the risk for certain serious problems, such as stroke.

Atrial fibrillation, or A-fib, is a common type of heart arrhythmia. It causes fast, chaotic electrical signals in the atria.

Alopecia areata is a condition that causes your hair to fall out. It causes bald patches on the scalp, but it can also cause hair loss on other parts of the body.

Actinic keratosis is a skin growth caused by sun damage. Many people get these growths, especially as they age. This is because of regular exposure to the sun over years.

Acanthosis Nigricans is a skin condition that causes dark, thick patches on the skin. It is more common in people who have diabetes or are at risk of developing diabetes.

Zika is a virus spread through the bite of a mosquito. It may also be passed on through sexual contact and blood transfusions.

Yersiniosis is a foodborne illness. It causes inflammation in the small intestine and colon. It is more common in children.