Tremor at rest accompanies Parkinson's disease, juvenile and secondary parkinsonism, some degenerative diseases of the central nervous system. Represents involuntary oscillatory movements at rest. May be combined with other types of tremor, muscle rigidity, hypokinesia, gait disturbances, postural disorders. To determine the cause of the symptom, a neurological examination is performed, MRI, electrophysiological studies, SPECT, PET-CT are prescribed. Treatment is with antiparkinsonian drugs, sometimes including surgery.