Answer: It is called PYODERMA.
Explanation:
Pyoderma is any skin disease that is characterise by acute, inflammatory ,pus forming bacteria infection(pyogenic). It is associated with autoimmune diseases like ulcerative colitrus, Cohn's disease and arthritis. Though the cause of pyoderma gangrenosum is unknown. Pyoderma include impetigo contagiousa, ecthyma folliculitis, tropical ulcer e.t.c.