What causes shaking of arms and legs?

Shaking of the arms and legs, known as tremors, can be caused by various factors, including neurological disorders such as Parkinson's disease, essential tremor, or multiple sclerosis. Other potential causes include anxiety, fatigue, medication side effects, or withdrawal from substances like alcohol. Additionally, low blood sugar or electrolyte imbalances can contribute to muscle tremors. If persistent, it's important to consult a healthcare professional for proper diagnosis and management.