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.
Anyone can develop dermatomyositis. It most often occurs in children age 5 to 15 and adults age 40 to 60. Women develop this condition more often than men. Polymyositis is a similar condition, but the symptoms do not include a skin rash.