Key contributors include high levels of stress or anxiety, which flood the body with cortisol and adrenaline, overstimulating nerves and muscles. A hemifacial spasm involves involuntary contractions of muscles on one side of the face and is caused by a blood vessel compressing the facial nerve near the brainstem.
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A common culprit is a temporary disruption in the nerve signal, which can be sparked by physical triggers or lifestyle factors. Other possibilities include certain medication side effects or, more rarely, diseases affecting the motor neurons.
Caffeine and nicotine are potent stimulants that can lower the threshold for nerve firing, leading to increased muscle excitability. When to Consider Medical Factors If the twitching persists for more than a few weeks or is accompanied by other symptoms, it is important to consider underlying medical conditions.
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When this system is disrupted, the result is a fasciculation, or a small, involuntary muscle contraction. Potential Neurological and Physical Conditions In some instances, persistent twitching can be a symptom of a neurological disorder or a physical irritation affecting the facial nerve.
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