Arthritis

Inflammation in the area where a tendon, ligament, or joint capsule attaches to the bone occurs in 35–50% of patients with psoriatic arthritis (PsA). Its presence is associated with higher activity of PsA, and its intensity correlates with the degree of joint damage. Patients with enthesitis are generally in worse functional status and report greater fatigue, pain, and decreased productivity. How can treatment with tofacitinib affect this important domain of PsA?