Sarcoptes scabiei in a Sexually Transmitted Infections Unit

In Brief Background: Few epidemiologic studies of scabies in sexually transmitted infection (STI) unit attenders exist. Goal: The goal of this study was to determine epidemiology and trends of infestation among attenders at a Spanish STI unit. Study: A prospective 15-year (1988–2002) study was conducted of 9751 STI unit attenders, investigating scabies and other STIs. Results: One hundred forty-seven patients (1.5%) had scabies, which was more frequent in males (2.1%, 73 of 3623) than in females (1.2%, 72 of 6128) (P <0.001). Infestation peaked in autumn/winter (70.1%) versus spring/summer (29.9%) (P <0.001). Significantly more cases occurred in single men (P <0.05), males under 35 (P <0.05), men with sporadic sexual contacts (P <0.001), and men who have sex with men (MSM) (P <0.001). In women, more cases occurred in Spanish patients (P <0.01), high alcohol users (P <0.05), and oral contraceptive users (P <0.01). In both sexes, scabies was commoner in smokers (P <0.05) and parenteral drug abusers (P <0.001). Scabies showed no significant association with other STIs. Conclusions: Scabies incidence has been stable, with autumn and winter peaks. Infestation is associated with lifestyle, MSM, and males with sporadic sexual contact. A 15-year scabies study showed stable infestation rates, peaking in autumn and winter, and a higher incidence associated with marital status, high tobacco and alcohol use, parenteral drug abuse, oral contraceptives, and males with sporadic sexual contact.