Quality of Life and Ultrasonographic Assessment of Nail Psoriasis After Treatment With Apremilast (JUST Study)

Target nail ultrasound will be performed in patients on apremilast by two expert dermatologists and each one will determine the ecographic parameters described in the protocol. These variables would be measured in one target nail in each patient, the greatest and most severely affected, at the investigator's criterion. The same nail will be assessed in all visits of the study (baseline, weeks 4, 16, 24, 38 and 52) . The ultrasound study will be performed with the same device in both hospitals: Esaote's MyLab ultrasound with a 20 MHz transducer. Prior to the start of the study the investigators evaluated the ultrasonographic inter-intraobserver concordance.