Osteomyelitis of Unknown Origin

Abstract

Osteomyelitis is inflammation and or swelling of the bone. The infection site can either be at the bone or from another part of the body that has spread to the bone. Staphylococcus aureus and staphylococcus epidermis are responsible for most cases due to being a part of normal skin flora. Salmonella is rarely reported and accounts for 0.45% of all causative agents of salmonella. Salmonella osteomyelitis in immunocompetent adults is uncommon and occurs in approximately 0.8% of all Salmonella infections. Myositis is muscle inflammation that can be due to both infectious and non-infectious causes. Infectious causes can be classified into pyogenic or non-pyogenic. Infection-related myositis occurs due to bacterial, viral, fungal, mycobacterial, or parasitic infections as the root cause. Bacteria and fungi are the most common cause of focal myositis. Myositis with Salmonella species is rare and has been reported with Salmonella Typhi and Salmonella Enteritidis.