Check on the cost. Check the number of sessions needed before benefits are felt. Choose someone you feel comfortable with. DON'T Be afraid to ask for credentials and references. Be taken in by people who say you should follow their method and abandon everything else.
Some people swear that copper bracelets on their wrists help their arthritis.
There is no scientific evidence that they do any good. On the other hand, there is no evidence that they do harm. If you are looking for a complementary practitioner, you will find lots in your local Yellow Pages or Thomson's Directory, but this will give no indication of how good they are. Your doctor or health centre may be able to give you a recommendation. Complementary therapies have no strict system of qualification.