The Diagnostic Significance of Tremors

or abolished during movement. This is absent during sleep and often during complete muscular relaxation, as when resting in bed. When fully developed this tremor may be widespread and include several components. 2. Intention, action. or motor tremor. This type of tremor is absent as a rule when the patient is at rest and appears only during movements, especially those which require exact co-ordination, such as the fingernose test. Frequently there is no tremor during the first part of the movement, but as the finger approaches the nose, the oscillatory movements occur which increase in amplitude. The rhythm is never quite regular. It may be questioned whether this sign is properly included among the tremors for it is closely associated with cerebellar ataxia, and is probably best explained as a special form of incordination. 3Red Nucleus Tremor. This combines the characteristics of Numbers 1 and 2; that is? there is a rhythmic tremor of rest which is accentuated upon movement, during which ^ resembles an intention tremor. Since it is found in association with lesions of the red nucleus and the rubrospinal tracts, it has been called a red nucleus tremor. 4. Irregular tremors, both