Gp neelima neuro muscular 8-02-17 (

A 42 year old man presents with weakness and parasthesiae of the right arm and leg that developed 12 hours after the onset of a piercing left sided headache. There is no neck stiffness, but there is a pain in the left side of the neck and occiput. Kernig´s sign is negative. He is afebrile, and blood results are normal. The investigation of choice is which one of the following?

A 33 year old woman has a severe frontal and occipital headache as soon as she wakes in the morning. She gave birth to a baby boy one month ago and has not been feeling well since. Exam shows bilateral blurring of the optic discs with pupil sparing and 3^rd nerve palsy on the right. The likely diagnosis is