Related Experiment Video
Updated: Dec 20, 2025

Capsular Serotyping of Streptococcus pneumoniae by Latex Agglutination
Published on: September 25, 2014
Streptococcus pyogenes balanoposthitis
Yuta Norimatsu1,2, Yuki Ohno1
1Department of Dermatology, JR Tokyo General Hospital, Japan.
Abstract:
The main causative organism of balanoposthitis in sexually active adolescents is reportedly the group B hemolytic streptococcus. While cases of balanoposthitis caused by group A streptococcal infection in children have been reported, their occurrence in the adolescent age group is relatively rare. We describe a case of balanoposthitis caused by Streptococcus pyogenes (group A streptococcus) in a 31-year-old man who presented to the hospital with complaints of pain and swelling in his penile foreskin for the past 6 days. The patient was treated successfully by performing a ventral incision on the foreskin and administering effective antimicrobial therapy involving amoxicillin 750 mg/day. Group A beta-hemolytic Streptococcus pyogenes should also be considered a causative organism in the differential diagnosis, while managing a patient with balanoposthitis.
More Related Videos
Related Concept Videos
Sexually Transmitted Infections
Bacterial Phylum Spirochaetes
Acute Pyelonephritis II: Diagnostic Studies and Management
Acute Pyelonephritis I: Introduction
Acute Pharyngitis
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:
Skin Diseases and Disorders
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...

