Other possible causes are drugs, prescribed medicines, brain, nerve or movement disorder, alcoholism, low blood sugar, muscle fatigue, stress, anxiety,
overactive thyroid, too much caffeinated drinks, multiple sclerosis and parkinson’s disease. you could try relaxation techniques, meditation, avoid caffeine, sleep well, abstain from alcohol etc. consult a neurologist if the tremor is worse at rest, prolonged and is associated with headaches, weakness, muscle tightening etc.