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Burr holes are small holes that a neurosurgeon makes in the skull. Burr holes are used to help relieve pressure on the brain when fluid, such as blood, builds up and starts to press on brain tissue.

Carnitine is a nutrient that helps the body's cells work normally. Primary carnitine deficiency is when not enough carnitine can get into cells in the body. This can cause muscle weakness. It can also cause heart or liver problems. Primary carnitine deficiency is a rare health problem a child is born with. It is caused by an abnormal gene.

Carnitine is a nutrient that helps the body's cells work normally. Secondary carnitine deficiency is when there isn't enough carnitine in the blood. This can cause muscle weakness. It can also cause heart or liver problems. Secondary carnitine deficiency can by caused by a number of health problems.

An epidermoid cyst is the growth of normal tissue in an abnormal place in the body. It contains skin and nail tissue. An epidermoid cyst is also called an epidermoid tumor. The cyst is not cancer (benign). But in rare cases, an epidermoid cyst may turn into skin cancer.

A pineal is a type of brain cyst. They are generally not cancer (benign). Read on to learn about symptoms, diagnosis, and treatment.

A carotid dissection is a tear in the inner layer of an artery in the neck. You have one carotid artery on each side of your neck. These arteries send blood to your brain.

A vitrectomy is a type of eye surgery to treat problems with the retina and vitreous. During the surgery, your eye healthcare provider removes the vitreous and replaces it with another solution.

Here are images to help you understand how to put on thigh-high compression stockings.

Endovascular repair is a type of treatment for an abdominal aortic aneurysm (AAA). An AAA is a bulge in the wall of the large artery below your heart.