👉 Serosynovitis is a condition that occurs when the synovial membrane of joints, which is a protective layer between joint surfaces and the surrounding tissue such as cartilage or bone, becomes inflamed. This can cause pain or stiffness in the affected area, particularly in knee and shoulder joints. The exact causes of serosynovitis are not fully understood but it has been linked to an overactive immune system that attacks synovial tissues. Symptoms can include joint pain, swelling,
