Diclofenac is used for pain , inflammatory diseases and dysmenorrhea or painful menstruation etc. Inflammatory diseases are arthritis , rheumatoid arthritis , osteoarthritis , polymyositis , dermatomyositis , ankylosing spondylitis . It is also used in cases of kidney stones or gallstones , migraine pain etc. Diclofenac is also used to relieve post-operative or traumatic mild to moderate pain. Diclofenac is also available as an ointment that is used topically for strain or traumatic or inflammatory pain. It is used in carcinogenic pain.