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.
In the United States, it is believed that about 6 to 12 million children between 3 and 12 years of age get head lice each year. Head lice are not known to spread disease, but having head lice can make your scalp extremely itchy. If you scratch a lot, it can cause sores on the scalp that may lead to an infection.