PsoriasisPUVA TherapyDermatologic AgentsUltraviolet TherapyFicusinArthritis, PsoriaticHLA-C AntigensSkinAntigens, CD11aDermatitis, AtopicSeverity of Illness IndexEpidermisTh17 CellsKeratinocytesCase-Control StudiesInterleukin-17Skin NeoplasmsQuality of LifeGenetic Predisposition to DiseaseIncidenceRisk FactorsCoal Tar