Tetanus spasm: what to know

Tetanus commonly begins with stiffness around the jaw, followed by tightness in the neck, abdomen, or other muscle groups. Spasms may be triggered by touch, noise, light, or movement and can make swallowing or breathing difficult. The muscles may remain tense between episodes.

A spasm after a wound does not prove tetanus, because other problems can cause muscle tightening. The pattern, wound details, vaccination history, and examination help a clinician judge the cause.

Call emergency services if spasms are occurring, especially with jaw locking, swallowing difficulty, breathing trouble, or rapidly increasing stiffness. Keep the person in a calm, quiet setting, avoid unnecessary handling, and do not place objects in the mouth.

If there is a recent puncture, deep, crushed, or dirty wound without spasms, arrange prompt medical care. A clinician can clean the wound and review whether tetanus vaccination or other preventive protection is appropriate. Information about the injury and prior doses is useful.

Treat new jaw tightness, repeated painful contractions, severe stiffness, or trouble breathing after a potentially contaminated wound as an emergency. Tetanus spasms can become more frequent and involve muscles needed for breathing, so waiting for a routine appointment is unsafe when these signs are present.

Ask whether the pattern could represent tetanus, how the wound should be managed, and whether your vaccination record changes the recommended prevention. Mention the time and type of injury, wound contamination, previous vaccination, and any triggers that bring on tightening.