Talk to Neuro Physician on Hello My Brother Has Age Had Problem With Him.

he is 10 year old my brother has a problem with head neuro suddenly he waking fast and also his head moving some time in bed also suddenly going up and then back fast in bed this problem from 15 days doctor had write epival syrup. please explain in detail I go to mri but my brother did not set on mri machine. here in mri machine doctor give him sleeping injection but he did sleep what is his problem please detail explain