Complications

Persistent and severe hidradenitis suppurativa can cause complications, including:

• Infection. The affected area is susceptible to secondary infection, but the presence of pus is common in hidradenitis suppurativa and doesn't necessarily mean infection.
• Scars and skin changes. The wounds may heal but leave ropelike scars or pitted skin.
• Restricted movement. Sores and scar tissue can cause limited or painful movement, especially when the disease affects the armpits or thighs.
• Skin cancer. Squamous cell carcinoma has been reported with long-term hidradenitis suppurativa, particularly in people whose condition involves the perianal area.
• Swelling in the arms, legs or genitals. The most common sites for hidradenitis suppurativa also contain many lymph nodes. Scar tissue can interfere with the lymph drainage system, which can result in swelling in the arms, legs or genitals.
• Psychological effects and social isolation. The location, drainage and odor of the sores can cause embarrassment and reluctance to go out in public, leading to anxiety or depression.