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Understanding Dehydration and Muscle Function
March 31st, 2026

Can Dehydration Cause Muscle Twitching?

Yes, dehydration can cause muscle twitching by disrupting the balance of electrolytes that control muscle function. When you lose fluids, sodium and potassium levels drop, affecting nerve signals to muscles. Studies show that losing just 2% of body weight through fluid loss can trigger muscle cramping and twitching, especially in the calves, eyelids, and hands. Mild dehydration-related twitching typically resolves within hours of proper rehydration with water and electrolytes. However, persistent twitching lasting more than a few days may indicate other underlying conditions requiring medical evaluation.

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