Minor muscle spasming can occur due to health conditions like nutrient deficiencies. More severe twitching can be a symptom of serious health conditions, including those affecting the nervous system.

While sitting still at your desk or watching TV, you sense a feeling of muscular discomfort in your arm or leg ... The random muscle twitch is at best annoying and at worst, a sign of a ...

Though many people experience muscle twitching, it's often incorrectly identified as a muscle spasm. While both are involuntary contractions of a muscle, muscle spasms and muscle twitching aren't ...