Causes

Pyoderma gangrenosum is thought to be an autoimmune disorder, which means it occurs when the body's immune system attacks its own tissues.

Risk Factors

Pyoderma gangrenosum is more likely to occur in people who have other underlying medical conditions, including:

• Ulcerative colitis
• Crohn's disease
• Chronic active hepatitis
• Rheumatoid arthritis
• Polycythemia vera
• Myeloma
• Behcet's syndrome
• Acute myelogenous leukemia
• Chronic myelogenous leukemia

Ulcerative Colitis

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