This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
CASPAR criteria is used in diagnosis of ? 
Select and explain. 
A. Psoriatic ahritis, B. Rheumatoid ahritis, C. Ankyosing spondylitis, D. Reactive synnovitis
A: Psoriatic ahritis
Answer: A: Psoriatic ahritis 
Explanation: Ans. is 'a' i.e., Psoriatic ahritis Classification criteria for psoriatic ahritis (CASPAR) is used for the diagnosis of psoriatic ahropathy. The CASPAR (classification Criteria for Psoriatic Ahritis) Criteria To meet the CASPAR criteria a patient must have inflammatory aicular disease (joint, spine, or entheseal) with 3 points from any of the following five categories : Evidence of current psoriasis, a personal history of psoriasis, or fa family history of psoriasis. Typical psoriatic nail dystrophy observed on current physical examination. A negative test result for rheumatoid factor. Either current dactylitis or a history of dactylitis recorded by a rheumatologist. Radiographic evidence of juxtaaicular new bone formation in the hand or foot.