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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. [ABSTRACT FROM AUTHOR]

The article presents a case study involving a 66-year-old man presented with acutely distal weakness of the left leg. Forty-eight hours after the onset of the condition, the patient had recovered from ankle weakness, however, paralysis of toe dorsiflexion and severe paresis of toe plantar flexion continued. The study found that left ankle dorsiflexion and eversion of the patient have affected seriously which could not easily be moved.