Table 1.

Diagnostic criteria for hidradenitis suppurativa [2]

Primary positive diagnostic criteria
	History: painful or suppurating lesions that recurred more than twice in 6 months
	Signs: involvement of the axilla, genitofemoral area, perineum, gluteal area, or (in women) the inframammary area; presence of nodules (inflamed or non-inflamed), sinus tracts (inflamed or non-inflamed), abscesses, or scarring (atrophic, mesh-like, red, hypertrophic, or linear)
Secondary positive diagnostic criteria
	History: family history of hidradenitis suppurativa
	Microbiology: a negative swab or the presence of normal skin microbiota may be indicative of hidradenitis suppurativa