What causes Acute febrile neutrophilic dermatosis ?
What causes acute febrile neutrophilic dermatosis? In many cases, the cause of acute febrile neutrophilic dermatosis is unknown (idiopathic). But sometimes, it can be a sign of an immune system response to one of the following: An upper respiratory tract infection, such as a chest infection or strep throat Blood disorders, especially acute myelogenous leukemia, a cancer of the blood and bone marrow Inflammatory bowel disease, such as ulcerative colitis or Crohn's disease Bowel or breast cancer Pregnancy Rheumatoid arthritis An injury at the site where the rash appears, such as an insect bite or needle prick Certain medications, including nonsteroidal anti-inflammatory drugs (NSAIDs)