A case of atraumatic tetanus developed initially with worsening headache in a woman regularly cared for chronic headache at an outpatient clinic

We presented a case of atraumatic tetanus developed initially with severe headache. Headache may be a clue to the presence of tetanus. Clinicians who usually treat headache should consider the possibility of tetanus in patients who present with symptoms that are severe and atypical for a given patient.