title: Erythema nodosum in Singapore.
abstract: A retrospective study was carried out of all patients presenting with erythema nodosum over a 3-year period (1994-1997) at the National Skin Centre, Singapore. There were 75 patients, aged 4-70 years with a peak (40%) in the 21-30-year-old age group; 65 were female and 10 were male, giving a female to male ratio of 6.5 : 1. Precipitating factors included viral respiratory tract infections and streptococcal pharyngitis in 20 cases (26%), tuberculosis in two cases (3%), pregnancy in three cases (4%) and miscellaneous conditions: Behcet's syndrome (two cases), gonorrhoea (one case), varicella (one case) and cat-scratch disease (one case). The cause was unknown in 45 cases (60%). The pattern of erythema nodosum in Singapore is similar to that reported in the Western literature except that sarcoidosis and inflammatory bowel disease are uncommon associations.
authors.affiliation: National Skin Centre, Singapore.
authors.forename: Y K
authors.initials: YK
authors.lastname: Tay
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D002648:Child; D002675:Child, Preschool; D004893:Erythema Nodosum / Q000188:drug therapy / Q000453:epidemiology / Q000209:etiology*; D004917:Erythromycin / Q000627:therapeutic use; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010406:Penicillins / Q000627:therapeutic use; D011247:Pregnancy; D012189:Retrospective Studies; D012846:Singapore / Q000453:epidemiology
chemical_list: D000900:Anti-Bacterial Agents; D010406:Penicillins; D004917:Erythromycin