BACKGROUND AND OBJECTIVES: Ankylosing spondylitis (AS) is a chronic inflammatory autoimmune disease. Its major symptom is chronic inflammatory low back pain, which treatment and complications represent a considerable burden to society. New therapeutic options have been studied to treat refractory inflammatory low back pain in AS patients. The objective was to present two AS patients with low back pain refractory to non-steroid anti-inflammatory drugs (NSAIDs), who presented important clinical improvement with duloxetine. CASE REPORTS: Two male patients with AS and chronic inflammatory low back pain refractory to NSAIDs, who used duloxetine (60 mg/day) and presented major clinical improvement. CONCLUSION: Duloxetine was effective to decrease chronic inflammatory low back pain intensity in AS patients.
Analgesics; Ankylosing spondylitis; Causalgia; Low back pain