The exact incidence of anorectal sepsis remains unknown. One study stated that in a population of 300,000, there were 5000 to 6000 hospital admissions per annum due to anorectal sepsis.<sup>26 Buchan R., Grace R.H. Anorectal suppuration: The results of treatment and the factors influencing the recurrence rate Br J Surg 1973 ;  60 : 537  [cross-ref]

Cliccare qui per andare alla sezione Riferimenti</sup> The incidence is three times higher in men than in women, <sup>93 Hill J.R. Fistulas and fistulous abscesses in the anorectal region: Personal experience in management Dis Colon Rectum 1967 ;  10 : 421

Cliccare qui per andare alla sezione Riferimenti, 133 McElwain J.W., MacLean M.D., Alexander R.M. , e al. Anorectal problems: experience with primary fistulectomy for anorectal abscess, a report of 1000 cases Dis Colon Rectum 1975 ;  18 : 646

Cliccare qui per andare alla sezione Riferimenti, 156 Ramanujam P.S., Prasad M.L., Abcarian H. , e al. Perianal abscesses and fistulas: A study of 1023 patients Dis Colon Rectum 1984 ;  27 : 593  [cross-ref]

Cliccare qui per andare alla sezione Riferimenti, 184 Vasilevsky C.-A., Gordon P.H. The incidence of recurrent abscesses or fistula-in-ano following anorectal suppuration Dis Colon Rectum 1984 ;  27 : 126  [cross-ref]

Cliccare qui per andare alla sezione Riferimenti</sup> a finding that has been attributed to occupation, hair distribution, increased sweating, and poor hygiene. The peak incidence is in the third and fourth decades of life.<sup>133 McElwain J.W., MacLean M.D., Alexander R.M. , e al. Anorectal problems: experience with primary fistulectomy for anorectal abscess, a report of 1000 cases Dis Colon Rectum 1975 ;  18 : 646

Cliccare qui per andare alla sezione Riferimenti, 156 Ramanujam P.S., Prasad M.L., Abcarian H. , e al. Perianal abscesses and fistulas: A study of 1023 patients Dis Colon Rectum 1984 ;  27 : 593  [cross-ref]

Cliccare qui per andare alla sezione Riferimenti, 184 Vasilevsky C.-A., Gordon P.H. The incidence of recurrent abscesses or fistula-in-ano following anorectal suppuration Dis Colon Rectum 1984 ;  27 : 126  [cross-ref]

Cliccare qui per andare alla sezione Riferimenti</sup> The majority of these patients have simple abscesses or fistulas, and therefore treatment is often straightforward. However, certain conditions predispose to the development of more complex anorectal sepsis, in which, as a result of the underlying disease or the nature of the infecting organism, the treatment is much more challenging and controversial. Specifically, this article addresses the diagnosis and treatment of anorectal sepsis associated with these challenging conditions, including hidradenitis suppurativa, hematologic disorders, necrotizing fasciitis, Crohn's disease, and AIDS.