Health A-Z


Clinical Definition Cataplexy is an acute, transient attack characterized by hypertonia and weakness. Weakness can be generalized or limited to certain muscle groups. Precipitating factors associated with cataplexy are intense emotional stimuli, such as anger and fear. A decrease in hypocretin, which is a neurotransmitter, is believed to be a contributing factor to cataplexy. Cataplexy


Clinical Definition Normally, the lens in the eyes are clear or transparent. However, a cataract is an abnormal clouding or opacity of the eye’s crystalline lens. The opacity can lead to a decrease in vision and possibly blindness. Cataracts are thought to develop as a result of age-related degenerative alterations to the proteins in the

View Terms Beginning with "D"