Pyoderma gangrenosum (PG) is a rare inflammatory skin condition that causes painful, rapidly enlarging ulcers. It is not simply a bacterial infection, so treatment usually focuses on controlling abnormal inflammation and protecting the wound.
Common treatment options
Corticosteroids
Oral prednisone is commonly used for moderate or severe disease.
Steroid creams or injections may be used for smaller lesions.
Long-term/high-dose steroids require medical monitoring because of side effects.
Immune-suppressing medicines
Depending on severity and response, dermatologists may use:
Cyclosporine
Mycophenolate mofetil
Dapsone
Methotrexate
Azathioprine
Biologic medicines
For difficult or resistant PG, medicines such as infliximab or adalimumab may be considered. Other biologics have also been reported, but selection depends on the individual case and associated diseases.
Wound care
Gentle wound care is very important. Non-stick/moist dressings, appropriate pain control and management of swelling can support healing.
Avoid aggressive surgery during active disease
A key point is that wide surgical debridement can make PG worse because trauma to the skin can trigger expansion of the ulcer (pathergy). Surgical reconstruction may sometimes be considered after inflammation is controlled.
Important
Because PG can resemble an infected wound or other types of ulcers, the diagnosis should be confirmed by a dermatologist, often with tests/biopsy to exclude other causes. A rapidly enlarging, very painful ulcer should receive prompt medical assessment.
If you are asking because you or someone has been diagnosed with pyoderma gangrenosum, tell me the ulcer location, approximate size, how long it has been present, and current medicines, and I can explain the usual treatment approach for that situation.