Benign tremor is also called idiopathic tremor. Others are: hereditary tremor and senile tremor, which are now advocated as idiopathic tremor. The cause of this disease is still unclear, but about one-third of patients have a family history, so there is a strong relationship with genetics. Some elderly people suspect that they have Parkinson’s disease when they have tremor and are very nervous, but in fact these are two completely different diseases. Although both diseases have tremor, tremor is the only symptom of idiopathic tremor, while Parkinson’s disease has some other symptoms in addition to tremor. For example, slow movement of getting up and turning over and walking due to muscle straightening, lack of facial expression and mask face, writing smaller and smaller, etc. How to distinguish between the two diseases, first of all, the onset of the disease is different. Parkinson’s disease tends to occur in the hands, lower limbs and trunk. The onset of the disease begins in one upper extremity first, and then progresses to the opposite upper and lower extremity after the lower extremity. In contrast, idiopathic tremor is mainly in the hands, head and also the jaw and tongue, and the trunk and lower extremities are not easily involved. The tremor pattern is also different in these two conditions. In idiopathic tremor, the hands shake constantly when moving or angry, for example, when carrying dishes or glasses of water. Parkinson’s disease, on the other hand, is the opposite: it is a tremor that occurs during inactivity. If you are sitting here, your hands move, your head shakes and moves, especially your lower limbs tremble more. When you move around, the tremor is a little lighter.