hi sir,the symptoms your wife is having are related to central nervous system.the probable causes of such symptoms are migraine headache, transient ischemic attack(TIA),ischemic stroke,intracranial space occupying lesion(brain tumours),vertebral artery(the vessel that supplies brain)pathology etc.but instead of making speculations,one MRI brain will guide us to arrive at the specific diagnosis and thereby facilitates an appropriate and timely treatment.kindly make it as early as possible to consult a neurophysician.any further queries,please let me know.thank you.take care.bye.