Hi...., Numbness in your right hand means that you have lost the feeling or sensation in your fingers or hand. This can be caused by compression or other irritation of a nerve that travels to the fingers, hand or arm... Or it could be due to electrolyte imbalance... If you are dehydrated you need to drink fluids until you can restore your body to normal and regain sensation in the hands.... If the numbness gets worse, comes and goes, affects both sides of your body consult Physician....