title: Environment and genetics in psoriasis.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D004200:Diseases in Twins; D004777:Environment; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010375:Pedigree; D011565:Psoriasis / Q000209:etiology* / Q000235:genetics*; D044469:Racial Groups