Table 3. Hidradenitis suppurativa severity index (2010).

Score per category	0	1	2	3	4
Number of areas involved*	0	1	2	3	≥4
BSA (%)	0	1	2–3	4–5	>5
Number of erythematous/painful lesions	0	1	2–3	4–5	>5
Drainage (number of dressing changes)	0		1	>1
VAS of pain	0–1		2–4	5–7	8–10

BSA: body surface area, VAS: visual analogue scale.

^*Areas: Rt/Lt armpit, Rt/Lt chest, Rt/Lt groin, perianal, sacral, perianal.