Epidemiology of urticaria.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000799:Angioedema / Q000453:epidemiology; D002648:Child; D003875:Drug Eruptions; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D014581:Urticaria / Q000453:epidemiology*