鏈球菌性肛門周圍皮膚炎(Perianal streptococcal dermatitis)是因感染A群貝它融血性鏈球菌(group A β-hemolytic streptococci)導致肛門周圍皮膚之表淺性皮膚炎。臨床上的表現有紅斑、癢感、肛痛;三分之一的病人大便帶有血絲。此病好發於7月大到11歲大的小孩。在此我們報告一位6歲的男孩罹患鏈球菌性肛門周圍皮膚。此病患經給予口服penicillin和局部塗抹mupirocin軟膏後痊癒,然而此病患在病灶緩解時伴隨出現手指末端和唇部周圍皮膚脫皮之現象。我們認為這脫皮之現象是鏈球菌外毒素所引起的。
Perianal streptococcal dermatitis (PSD) is a superficial bacterial infection of the parianal area. PSD is usually caused by group A β-hemolytic streptococci and rarely, the group G β-hemolytic strep- tococci or staphylococcus aureus. Symptoms include perianal rash, itching and rectal pain; blood- streaked stools may be also seen in one third of patients. It primarily occurs in children between 7 months and 11 years of age. We report a 6-year-old boy with PSD who developed desquamation of his fingers and perioral skin. The desquamation developed concomitant with resolution of perianal dermatitis. We propose that desquamation in this patient was due to PSD and its release of streptococ- cal exotoxin. Therapy by oral penicillin and topical mupirocin is effective.