<unk>  is most often caused by the bacterium Staphylococcus aureus. The infection can affect any skeletal muscle, but most often infects the large muscle groups such as the quadriceps or gluteal muscles.<unk>  is mainly a disease of children and was first described by Scriba in 1885. Most patients are aged 2 to 5 years, but infection may occur in any age group. Infection often follows minor trauma and is more common in the tropics, where it accounts for 4% of all hospital admissions. In temperate countries such as the US,<unk>  was a rare condition (accounting for 1 in 3000 pediatric admissions), but has become more common since the appearance of the USA300 strain of MRSA. Gonococcal<unk>  is a rare infection caused by Neisseria gonorrhoeae.
Pyomyositis
Necrotizing fasciitis
Dermatomyositis
Scleromyositis
Juvenile dermatomyositis
Tension myositis syndrome
Polymyositis
Dermatopolymyositis