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.
Infants frequently have seborrheic dermatitis, commonly known as âcradle cap.â Areas of possible involvement include the scalp, face and intertriginous areas. Involvement may be extensive, but this disorder frequently clears spontaneously by six to 12 months of age and does not recur until the onset of puberty.