Joint Swelling, Pain, Impaired Mobility, Local Effusion, and Discomfort Such As Clicking or Friction During Movement

The core symptoms of synovitis are joint swelling, pain, and limited mobility. Some patients may experience accompanying symptoms such as local increased temperature or effusion-related manifestations, which vary slightly depending on the affected joint (commonly the knee, hip, or ankle) and whether it is acute or chronic: Core Common Symptoms Joint swelling: Inflammation stimulates the synovium to secrete excessive synovial fluid, leading to obvious swelling and fullness of the joint. A fluctuating sensation may be felt when pressed (when there is a large amount of effusion). Joint pain: Mostly dull pain, distending pain, or worsening after activity. Pain is severe during acute episodes and does not relieve significantly with rest. The painful area corresponds to the affected joint. Limited mobility: Swelling and pain affect joint movements such as flexion, extension, and rotation. Chronic synovitis may cause joint stiffness due to long-term inflammation, which is particularly noticeable in the morning or when getting up after prolonged sitting. Other Accompanying Symptoms Local increased temperature: In acute or infectious synovitis, the skin temperature on the joint surface may be higher than that of surrounding tissues, with a warm sensation when touched. Clicking or friction sensation: When some patients move the joint, slight clicking may occur due to synovial hyperplasia or effusion flow, accompanied by friction-like discomfort. Systemic symptoms: Infectious synovitis (such as bacterial infection) may be accompanied by systemic inflammatory responses such as fever and fatigue. Non-infectious synovitis generally has no systemic symptoms. made in china