hiwhile writing my thumb shakes badly.

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Thank you for your question.
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What causes shaking hands and fingers?

Over-the-counter stimulants that contain caffeine such as coffee, tea and others
Lower blood sugar than normal
Aging
Overuse of alcohol and drugs
Withdrawal symptoms of drugs
Psychological and social stressors
Anxiety, tension, fatigue and stress
Parkinson's disease
Take some drugs and non-prescription drugs

What is the treatment of shaking of hands and fingers?

physical relaxation
Mental comfort, mind filtering and thinking
Stay away from the stresses of everyday life
Avoid drinking stimuli and extravagance
Avoid drinking alcohol and drugs
Stay away from smoking
Eat appropriate food for the body and supply it with energy and essential elements
Drink plenty of water daily
Avoid taking non-prescription medicines
Treating Parkinson's disease
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