模旦k d FUDAN UNIVERSITY (Clinical manifestations) 1.Age:<40 2. Onset: insidiously 3. Pathology: enthesis 4. Clinical manifestation low back pain and stiffness arthritis ye disease cardiovascular disease【Clinical manifestations】 1. Age: <40 2. Onset: insidiously 3. Pathology: enthesis 4. Clinical manifestation: low back pain and stiffness arthritis eye disease cardiovascular disease -------