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: Symptoms. Symptoms of dermatomyositis can occur in both sexes and but affects women far more often than men. Dermatomyositis can occur at any age but is most common in school-age children and middle-age adults. The primary symptoms of dermatomyositis is muscle weakness and a skin rash. Muscle weakness tends to occur in the upper arms, shoulders, thighs ...more symptoms Â».