Psoriatic Arthritis vs Osteoarthritis
By Liji Thomas, MD
When a patient complains of joint pain, the first step is to identify the source of the pain: inflammatory or non-inflammatory. The next step is to establish the pattern of joint involvement. This includes the number of joints involved, the type of joints, symmetrical joint involvement, and onset of symptoms.
The third step is serologic testing to establish a diagnosis of seropositive or seronegative arthritis. Both PsA and OA are seronegative. Imaging studies are also helpful in differentiating different forms of the disease.
https://www.news-medical.net/health/Psoriatic-Arthritis-vs-Osteoarthritis.aspx
