Osmophobia or hyperosmia featured in 25 of 50 migraineurs during the headache phase of their attacks. Pleasant or unpleasant odours could precipitate migraines in 11 patients in this series. Other sensory disturbances and precipitants were also studied. Neurological precipitation of attacks provides further support for a primary neural rather than a vascular pathogenesis of migraine.
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Blau, J.N., Solomon, F. Smell and other sensory disturbances in migraine. J Neurol 232, 275–276 (1985). https://doi.org/10.1007/BF00313864
- Sensory threshold