What causes muscle twitching?

Jul 14, 2024 Source: Cainiu Health
Disease description:

I used to think only eyelids could twitch, but these past few days I've noticed my muscles twitching as well. I'd like to ask the doctor, what causes muscle twitching?

Doctor's answer (1)
Dr. Huang Shichang
Muscle twitching may be caused by various factors, mainly including: 1. Physiological factors: such as muscle fatigue due to excessive exercise or physical labor, or increased neuromuscular excitability caused by mental tension or anxiety. 2. Environmental factors: cold stimulation may trigger muscle spasms, manifesting as muscle twitching. 3. Nutritional factors: when the body lacks calcium, neuromuscular excitability also increases, leading to muscle twitching. 4. Disease-related factors: neurological diseases such as motor neuron disease, multiple peripheral neuropathy, and brain disorders such as epilepsy can all cause muscle twitching. 5. Localized allergy: contact with allergens locally may cause allergic reactions, presenting as abnormal sensations including muscle twitching. If muscle twitching occurs frequently or is accompanied by other symptoms, prompt medical attention is recommended.