Not every shaky hand is Parkinson's. While most hand tremors are harmless and worsen with stress or caffeine, some patterns need attention. Learn the difference between Usually Harmless, Get It Checked, and See A Neurologist Soon red flags like resting tremor, slowness, and stiffness. Early evaluation helps — most tremors are treatable. Consult Dr. Vaibhav Deorari, Neurologist in West Delhi.