Numbness in trigeminal nerve distribution

Basal artery lower branch syndrome: It is due to the occlusion of small branches of the lower segment of the basilar artery or the upper segment of the vertebral artery, which leads to the infarction of the hypothalamus and the brain stem. Presented as dizziness, nystagmus, diplopia, lateral paralysis, internuclear ophthalmoplegia, dysphagia, cerebellar ataxia, gait instability, facial muscle weakness, burning in the eyes, and numbness in the trigeminal nerve . Lacunar infarction is one of the symptoms and signs.