“…Furthermore, GAS infection is a known complication of chicken pox in children [5], although only 1 of the 6 pediatric cases was GAS-positive. Although pyomyositis typically occurs in the lower extremities (9/24, 37.5%) [5, 9–27], other muscle groups can be involved, such as the iliac [10], psoas [11, 17], iliopsoas [11], trunk [5], neck [13, 18, 26, 27], and upper extremity muscles [14, 16, 19, 22, 25]. Involvement of multiple muscle groups is also common (9/24, 37.5%).…”