h4. What is Carpal Tunnel Syndrome? Carpal tunnel syndrome is a painful progressive condition caused by compression of a key nerve in the wrist. It occurs when the median nerve, which runs from the forearm into the hand, becomes pressed or squeezed at the wrist. Symptoms usually start gradually, with pain, weakness, or numbness in the hand and wrist, radiating up ...

h4. What is myasthenia gravis? Myasthenia gravis is a chronic autoimmune neuromuscular disease characterized by varying degrees of weakness of the skeletal (voluntary) muscles of the body. The name myasthenia gravis, which is Latin and Greek in origin, literally means "grave muscle weakness." With current therapies, however, most cases of myasthenia gravis are not as "grave" as the name implies. In ...

h4. Introduction Serious forgetfulness, mood swings, and other behavioral changes are not a normal part of aging. They may be caused by poor diet, lack of sleep, or too many medicines, for example. Feelings of loneliness, boredom, or depression also can cause forgetfulness. These problems are serious and should be treated. Often they can be reversed. Sometimes, however, mental changes are ...

h4. Introduction Until recently, most neuroscientists thought we were born with all the neurons we were ever going to have. As children we might produce some new neurons to help build the pathways - called neural circuits - that act as information highways between different areas of the brain. But scientists believed that once a neural circuit was in place, adding ...

h4. Introduction Despite efforts made in 1962 and 1988 to better define the clinical parameters of migraine, concepts of the basic pathophysiologic mechanisms responsible for the disease have remained essentially unchanged until the last decade. Therapeutic efforts concentrated on countering the vasodilatory status of the cerebral circulation to which was attributed the clinical manifestations of migraine. During the past decade, however, ...