Difficulties in diagnoss of psoriatic arthritis during outpatient visit of rheumatologist: clinical case

The article is devoted to the difficulties of diagnosing psoriatic arthritis, which can occur in the outpatient practice of a rheumatologist. In the clinical example, the case of the error diagnosis of rheumatoid arthritis in a young female patient with damage of small joints of the hands is described. The inattention of a rheumatologist to such features of the course of the disease as the presence of psoriasis in a patient, psoriasis and arthritis in a family history, the damage of distal interphalangeal joints, and the persistent absence of rheumatoid factor in serum has led to the an incorrect diagnosis.

psoriatic arthritis, rheumatoid arthritis, methotrexate, genetically engineered biological drug therapy, clinical case