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Pain Medicine Program Abstracts

Purpose: Trigeminal neuralgia is characterized by paroxysms of pain in the sensory distribution of the trigeminal nerve usually caused by vascular compression of the trigeminal nerve at the root entry zone. We describe the case of a 57-year-old female who experienced complete resolution of trigeminal neuralgia following hypertensive pontine haemorrhage. Methodology: Data was obtained from case notes and correspondence letters. A literature review was performed. Conclusion: We have described the fi rst case, to our knowledge, of resolution of trigeminal neuralgia following pontine haemorrhage. There are two mechanisms that we have proposed. The acute haemorrhage could have caused disruption of the descending trigeminal tract, effectively a trigeminal tractotomy. Alternatively, it could have resulted in demyelination at a second location in the trigeminal nociceptive pathway, resulting in blockade of aberrant painful stimuli.