断发毛癣菌现今在美国是头癣的主要病原菌.在50年代从墨西哥传入美国西南部,已取代了奥杜盎氏小孢子菌在许多地区流行.由断发毛癣菌引起平滑皮肤感染,亦并不为人们所熟知,最近数年也有了增加.本文研究的目的是①观察过去20年在芝 Trichophyton rubrum is now the main causative agent of tinea capitis in the United States and was introduced to the southwestern United States from Mexico in the 1950s and has replaced the prevalence of Orthopedischia spp. In many areas, resulting in a smooth skin infection caused by Trichophyton mentagrophytes, Is also not well known and has also increased in recent years.The purpose of this paper is to observe the past 20 years in the Chi