Pathological yawning as a presenting symptom of brain stem ischaemia in two patients

Cattaneo, L.; Cucurachi, L.; Chierici, E.; Pavesi, G.
January 2006
Journal of Neurology, Neurosurgery & Psychiatry;Jan2006, Vol. 77 Issue 1, p98
Academic Journal
Two cases of brain stem stroke involving the upper pons and the ponto-mesencephalic junction presented with transient excessive pathological yawning, associated with gait ataxia and in one subject with upper limb and facial hemiparesis. A causal relation is hypothesised between the brain stem lesion and pathological yawning, possibly related to denervation hypersensitivity of a putative brain stem yawn centre. Excessive yawning may herald brain stem ischaemia.


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