Clinical features

• Gradual onset of stiffness, dysphagia, muscle pain, hypertonia, rigidity and muscle spasm.

• Laryngospasm often follows dysphagia.

• Muscle spasm is often provoked by minor disturbance, e.g. laryngospasm may be provoked by swallowing.

• Onset of symptoms within 5 days of injury implies a heavy toxin load and severe disease.

• The disease is self-limiting so treatment is supportive but may need to continue for several weeks.

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