Hi and thanks for the query,
The sensation of loss of sensation in the hand when sleeping is a common phenomenon. For sure it could be annoying and actually disturbs sleep. This is most of the time due to 2 main clinical syndromes. First is the carpal tunnel syndrome
and secondly due to compression of the ulnar nerve
, which is somewhat very close to the surface, as a position is taken that compresses the arteries supplying blood to these nerves. In carpal tunnel syndrome, symptoms might range from temporal and actually disturbing permanent symptoms. Treatment involves use of vitamins
, non steroidal anti inflammatory drugs, steroids
and intra articular injection of these steroids.
I suggest you consult your neurologist
for medication and care.