What could cause my fingers to swell in the morning?

Nonspecific tenosyno. Nonspecifictenosynovitis is the medical term selg limited resolves with time can cause trigger finger and carpal tunnel dequervains.
Type and location. Swelling can occur in different areas. The whole hand can swell and this can be fluid . Individual joints can swell and this can clue different types of arthritis. It depends where the fingers swell, which finger swell, the chararcteristic of the swelling - hard is usually bone or calcium deposits, firm can suggest joint swelling as can soft, but soft can suggest fluid.