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Definition Moebius syndrome is a rare neurological condition that primarily affects the muscles that control eye movement and facial expression. Palsy of the muscles in the face is a common component of Moebius syndrome, and children who have this disorder typically lack the ability to smile, frown or raise their …

Definition Medial epicondylitis is commonly known as golfer’s elbow. This does not mean that only golfers have this condition. But the golf swing is a common cause of medial epicondylitis. Many other repetitive activities can also lead to golfer’s elbow: throwing, chopping wood with an ax, running a chain saw, …

Overview Mild cognitive impairment (MCI) is the stage between the expected cognitive decline of normal aging and the more serious decline of dementia. It can involve problems with memory, language, thinking and judgment that are greater than normal age-related changes. If you have mild cognitive impairment, you may be aware …

Description Myofascial pain syndrome (MPS) is a fancy way to describe muscle pain. It refers to pain and inflammation in the body’s soft tissues. MPS is a chronic condition that affects the fascia (connective tissue that covers the muscles). It may involve either a single muscle or a muscle group. …

Definition Mitral valve prolapse (MVP) is a condition in which the heart’s mitral valve doesn’t work well. The flaps of the valve are “floppy” and may not close tightly. These flaps normally help seal or open the valve. Much of the time, MVP doesn’t cause any problems. Rarely, blood can …

Definition Meniere’s disease (also called idiopathic endolymphatic hydrops) is one of the most common causes of dizziness originating in the inner ear. In most cases, only one ear (unilateral) is involved, but both ears (bilateral) may be affected. Ménière’s disease typically affects people between the ages of 40- and 60-years-old …

Definition A Morton’s Neuroma is a benign (noncancerous) swelling along a nerve in the foot that carries sensations from the toes. The reason the nerve starts to swell is unknown. But once swelling begins, the nearby bones and ligaments put pressure on the nerve, causing more irritation and inflammation. This …

Definition Metatarsalgia is a pain in the ball of your foot. It is often caused by wearing shoes with thin soles and high heels. This puts extra pressure on the bones in the ball of the foot. Standing or walking on a hard surface for long periods also puts added …