All of the following are seen in inflammatory polyarthritis, except –
**Inflammatory Polyarthritis**
### Core Concept
Inflammatory polyarthritis refers to a group of conditions characterized by inflammation of multiple joints, which can lead to joint damage and disability. This condition is often associated with systemic symptoms such as fever, fatigue, and weight loss. The underlying pathophysiology involves an abnormal immune response, leading to the activation of various inflammatory cells and mediators.
### Why the Correct Answer is Right
Inflammatory polyarthritis is typically characterized by the presence of rheumatoid factor (RF), anti-citrullinated protein antibodies (ACPAs), and elevated erythrocyte sedimentation rate (ESR) or C-reactive protein (CRP) levels. These markers indicate an autoimmune response and ongoing inflammation. The condition often affects multiple joints symmetrically, with a predilection for small joints of the hands and feet.
### Why Each Wrong Option is Incorrect
**Option A:** This option is incorrect because it is not a characteristic typically seen in inflammatory polyarthritis. Rheumatoid arthritis, a common form of inflammatory polyarthritis, often presents with morning stiffness lasting more than an hour, but this is not exclusive to inflammatory polyarthritis.
**Option B:** This option is incorrect because joint effusion, which is the accumulation of fluid in the joint space, is a common finding in inflammatory polyarthritis. It is often associated with joint pain, swelling, and warmth.
**Option C:** This option is incorrect because muscle weakness is not a characteristic typically seen in inflammatory polyarthritis. While patients may experience fatigue and decreased functional capacity due to joint inflammation and pain, muscle weakness is not a hallmark of this condition.
### Clinical Pearl / High-Yield Fact
Inflammatory polyarthritis is a systemic condition that requires a comprehensive approach to management, including the use of disease-modifying antirheumatic drugs (DMARDs) and biologic agents to control inflammation and prevent joint damage.
### Correct Answer: A.