Respected User , hi I evaluated your query thoroughly.
*As there are definite symptoms, even though BP is normal , we have to 
  consider possibility of underlying neuronal condition leading to the variety 
  of symptoms which he is having.
*Reasons range from alternations in electrolyte levels / blood sugar  or other 
  exertion induced 
hormonal changes   in abscence of any 
injury.
*Clarify with him about consumption of any alcohol / abuse substance / 
  sleeping pill  if any taken by him to sleep or relief from exhaustion.
*Should consult ER and get the diagnosis by clinical parameters and if 
  required evaluation by necessary blood tests / 
Nerve conduction studies 
  for peripheral nerves / 
MRI of specific region.
 Hope this clears you from your query.
 Thanks for using Health Care Magic and keeping trust in our medical 
  services.
 Regards.
 Wishing you a fast and speedy recovery from the same.
 Bye dear take care.