Four Types of Actuators. An actuator is a kind of motor that controls or moves mechanisms or systems. It takes hydraulic fluid, electric current or other sources of power and converts the energy to facilitate the motion.
Dercumâs disease, also known as adiposis dolorosa, is a rare disorder characterized by multiple, painful growths consisting of fatty tissue, called lipomas. They mainly occur on the trunk, the upper arms and upper legs and are found just below the skin.
Dermatomyositis can occur in people of any age. The peak age of onset in adults is approximately 50 years; the peak age of onset in children is approximately 5-10 years. Dermatomyositis and polymyositis are twice as common in women as in men.