For patients who discontinued or completed this drug before the end of the observation period, the investigator will record adverse events that occurred within 30 days after the day following the last administration of this drug, or the day of discontinuation of the survey (the day when discontinuation of the survey was judged), whichever is later, in the CRF.~If a patient withdraws consent, information will be collected during the observation period up to the date of consent withdrawal.
This is a multicenter, centrally registered observational study without a control group. This observational study is a specified drug use-results survey conducted under GPSP to collect information on safety and efficacy during the observation period (52 weeks after the start of treatment with this drug) in pediatric patients with psoriasis vulgaris, psoriatic arthritis, or pustular psoriasis who received this drug.