Tag Jill L. Ostrem

Definition Movement disorders are first divided into hypokinetic and hyperkinetic categories. Hypokinetic disorders , which are characterized by akinesia, bradykinesia, and rigidity, are parkinsonian syndromes and are discussed in Chapter 378 . The common hyperkinetic movement disorders ( Table 379-1…

Parkinsonism is a clinical syndrome that consists of four cardinal signs: tremor, rigidity, akinesia, and postural disturbances. Parkinson disease is a common cause of the syndrome, but there are numerous other causes ( Table 378-1 ). TABLE 378-1 DIFFERENTIAL DIAGNOSIS…