Parkinson’s is only one of the causes of hand tremor, simple hand tremor can not be fully diagnosed as Parkinson’s, need to be combined with other manifestations as well as auxiliary examination to confirm the diagnosis.
There are many diseases that cause hand tremor, on the one hand, physiological factors such as emotional excitement, nervousness, fear, anxiety, etc. will lead to involuntary hand muscle tremor, pathological factors such as hyperthyroidism, alcohol dependence, hepatic encephalopathy, cerebellar lesions, acute cerebral vascular lesions, drug intoxication and other causes can also cause hand tremor, Parkinson’s is only one of the causes of hand tremor.
The diagnosis of Parkinson’s can not only rely on pure hand tremor, but also muscle ankylosis, bradykinesia, postural gait abnormalities such as lower limb arm swing amplitude reduction, lower limb dragging and so on. Cognitive impairment, sensory abnormalities, and sleep disorders may also occur. Diagnosis can be assisted by examining dopamine metabolism for abnormalities and by MRI or CT to identify intracranial disease.