HidradenitisHidradenitis suppurativa can be itchy, but is usually painful, and the lumps hurt if they are pressed.
The severity of hidradenitis suppurativa varies from person to person. The main areas to be affected are the armpits, and the skin around the genitals - in the pubic area and in the groins. The skin around the back passage, on the upper buttocks and thighs, and below the breasts, can be affected too.
In these areas, the skin shows a variable mixture of blackheads, red lumps looking like boils, pus spots, cysts, and areas that constantly leak pus (sinuses). The abscesses can even burrow into nearby structures. As time goes by, more and more scarring appears.