CLASSIFICATION OF TREMORS

Until there is a greater understanding of basic tremorgenic mechanisms in the central nervous system, current classifications of tremors rel y heavily on the behavioural characteristics, putative sites of origin , and/or the underlying disease process. Careful clinical evaluation r emains the centrum of tremor classification. Few tremors do show speci fic neurophysiological features that will clinch diagnosis, e.g., prim ary orthostatic tremor and dystonic tremor. With the exception of dopa minergic drugs in Parkinson's disease, drug effects in tremors are unp redictable and nonspecific. Drug side effects should be considered in the differential diagnosis of any unexplained tremor.