A different sort of arthritis.  Spondyloarthropathies.
D000893:Anti-Inflammatory Agents / Q000627:therapeutic use*; D018771:Arthralgia / Q000209:etiology; D001416:Back Pain / Q000209:etiology; D005081:Exercise Therapy; D015796:HLA-B27 Antigen / Q000235:genetics; D006801:Humans; D007249:Inflammation / Q000150:complications / Q000188:drug therapy / Q000209:etiology; D025242:Spondylarthropathies / Q000150:complications / Q000235:genetics / Q000473:pathology / Q000628:therapy
D000893:Anti-Inflammatory Agents; D015796:HLA-B27 Antigen