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A 35-year-old woman, apparently normal, who had participated in traditional Devithullal (a religious dance form involving violent head banging for hours at a time) on the evening of the following day developed vomiting, urinary incontinence, altered sensorium and quadriplegia. All blood investigations including thrombophilia workup were normal. CT scanning of the brain was normal. MRI diffusion-weighted image showed the characteristic bilateral ventral pontine hyper intensities (figure 1A) and the apparent diffusion coeffient (ADC) map images showed bilateral ventral pontine hypointensities diagnostic of acute infarction (figure 1B). MR angiogram revealed basilar artery thrombosis (figure 2A,B).
‘Head banging’ denotes vigorous, rhythmical, rapid flexion and extension of the neck in time to music.1 It can cause vertebrobasilar ischaemia because the vertebral arteries are fixed in the transverse foramina rendering them susceptible to occlusion or shearing from extremes of neck motion. Rotation occurs first at the atlantoaxial joint before any rotation occurs in the cervical spine leading to stretching and compression of the vertebral artery. An intimal tear can occur with the formation of an intraluminal clot which may result in embolisation in the posterior circulation. It is likely that this was the mechanism of ischaemic stroke in our patient. However, the outcome was a locked-in state. Intense head banging leading to basilar artery thrombosis has been reported.2 The patient was treated with anticerebral oedema measures antiplatelet agents with physiotherapy. She is showing partial improvement in motor function in subsequent follow-up.
The neurological complications described with intense head banging include subdural haematoma vertebral artery aneurysm, carotid artery dissection, whiplash injury, odontoid fracture and vertebral artery dissection with vertebrobasilar ischaemia or infarction.1
The temporal relationship between intense head banging during heavy metal music and the posterior circulation stroke is striking1 and a high index of suspicion of vascular injury in young persons is required.3
In a retrospective study of patients under the age of 45 with ischaemic stroke the commonest likely predisposing factor was trauma.3
Contributors All the authors had equal role in writing editing and formatting the manuscript. RP was responsible for editing and formatting the images, reviewing the literature and collecting references.
Competing interests CR is a primary clinician under whom the patient was admitted investigated and treated. SWR is the Assistant Professor in charge of the case. AMT is the resident in charge of the case. RP is the third professional MBBS student.
Patient consent Obtained.
Provenance and peer review Not commissioned; externally peer reviewed.
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