No matter how old you are or what you do for a living, you are always using your hands. 
When there is something wrong with them, you may not be able to do your regular activities. 
Hand problems include  
   Carpal tunnel syndrome - compression of a nerve as it 
goes through the wrist, often making your fingers feel numb 
  Injuries that result in fractures (broken bones), ruptured ligaments 
and dislocations 
   Osteoarthritis - wear-and-tear arthritis, which can 
also cause deformity    
   Tendinitis - irritation of the tendons    
  Disorders and injuries of your fingers and thumb