The goal of this retrospective observational study is to characterize the clinical features, severity, comorbidities, and treatment patterns of pediatric psoriasis in patients managed in the Costa Rican Social Security System. The main questions it aims to answer are:
What are the demographic and clinical characteristics of pediatric psoriasis in Costa Rica?
What disease severity profiles, comorbidities, and treatments are observed in routine care?
All patients \<18 years with confirmed psoriasis evaluated during the study period will be included. Data will be obtained from electronic health records without intervention or modification of treatment.
Patients younger than 18 years at the time of psoriasis diagnosis.
Clinical diagnosis of psoriasis established by a specialist physician (dermatologist or trained pediatrician) or by a general practitioner within the Costa Rican Social Security System (CCSS).
Patients evaluated in CCSS healthcare facilities between January 2018 and December 2025.
Clinical records containing sufficient information on key epidemiologic and therapeutic variables relevant to the study (age, sex, date of diagnosis, clinical subtype, and treatment received).
Patients aged 18 years or older at the time of psoriasis diagnosis.
Clinical records incomplete or lacking sufficient information for analysis of the main study variables.
Patients with uncertain or unconfirmed diagnosis of psoriasis.