eccolo74/iStock/Getty Images. Technically, there is a difference between a pyramid scheme and a MLM, although I'm using the names interchangeably in this article because there is A LOT of overlap between the two. Pyramid schemes, in theory, emphasize recruiting new sellers over actually selling product, but in the end, they do both.
Dystonia is a movement disorder characterized by involuntary muscle contraction leading to abnormal postures and twisting movements. The frequency of this disorder is similar to multiple sclerosis. Several types are known and they are classified according to age of onset, distribution of dystonia, and cause.ovement Disorders Program-Introduction. Movement disorders are neurological diseases characterized by an abnormality of motor control because of diminished voluntary movements or increased involuntary movements.
Tremor is the most common movement disorder. Tremor is defined as a rhythmic, involuntary, oscillating movement of a body part occurring in isolation or as part of a clinical syndrome. In clinical practice, characterization of tremor is important for etiologic consideration and treatment.