There can be several reasons for these tremors but some of these tremors can be essential, meaning that no obvious cause can be identified (also called benign tremors). More common causes includes carpal tunnel syndrome, micronutrient deficiency, and stress. Carpal tunnel syndrome compresses the median nerve that controls some muscles in the thumb. Micronutrient deficiency such as Vitamin B complex or Calcium may also predispose you to these tremors. Stress is a common cause and yet most often overlooked. I suggest that you have this evaluated by your doctors since there can be several possibilities. For now, have adequate rest and sleep, and avoid too much stress.
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