Static Tremor in Anxiety States

manifestation is divisible into two main groups which have no etiological connotations. They are tremor at rest, and intention tremor. Static tremor is another less common manifestation of intention tremor. Static tremor is present when the part is being voluntarily held still against the force of gravity-as when the arm is held outstretched". It may be defined as an irregular involuntary move-ment of small excursion and rapid rate, resulting from contraction of the opposing skeletal muscles in use to keep the part in its static position. This loose definition serves to distinguish it from volun-tary movement, shivering, athetosis, choreiform movement and jactitation and convulsions. Sollenberger (1937) concluded that " tremor is an