Hello,
thanks for the query to H.C.M. Forum.
Since you mentioned that you are a hair dresser , hence right hand is most active during your work.
On the right side there is a tunnel known as CARPAL TUNNEL & in this tunnel there is a nerve known as
median nerve .
Beside median nerve a tendon ( flexor) is also passes through this tunnel , so due to over exertion this tunnel may compress than a patient feel pain,
numbness ( particularly in the night as you mentioned in your query).
This pain may be any where even in whole arm (
cervical spondylosis may be another cause).
Note down one thing , if pain is relieved by hanging the hand over the edge of bed it means 100% this is carpal tunnel compression of median nerve .
There are also,
Parasthesae,
Numbness,
Inco-ordination
weakness in the muslces of hand.
One more reason may be
rheumatoid arthritis ( few cases gout) ,so also rule out these.
May be due to
blunt injury during scuffle.
Physical examination by orthopaedician will reveal the cause.
Good luck Dr. HET