
Source: http://www.medicinenet.com/medterms-medical-dictionary/article.htm
MedTerms is the Medical Dictionary of MedicineNet.com
Psoriatic arthritis: Joint inflammation that is associated with psoriasis. Psoriatic arthritis is a potentially destructive and deforming form of arthritis that affects approximately 10 percent of persons with psoriasis.
Source: MedTerms™ Medical Dictionary