Answer the following Q with stream of consciousness. Context: The cause is usually a bacterial infection; rarely, a fungal infection. It may occur by spread from the blood or from surrounding tissue. Risks for developing osteomyelitis include diabetes, intravenous drug use, prior removal of the spleen, and trauma to the area. Diagnosis is typically suspected based on symptoms. This is then supported by blood tests, medical imaging, or bone biopsy.

Question: most common cause of osteomyelitis in iv drug users?
To answer this question, we should know that: The cause is usually a bacterial infection; rarely, a fungal infection. Therefore, the final answer is a bacterial infection.