[An outbreak of Pseudomonas folliculitis in children--the first report on Pseudomonas folliculitis in Japan].

An outbreak of Pseudomonas aeruginosa folliculitis in 6 children occurred within 5 days after playing in a tiny vinyl pool. The follicular macular or pustular eruptions were mainly distributed on the trunk. No associated symptoms were seen. The causative Pseudomonas aeruginosa strain isolated from pustules of one case belonged to serogroup E, corresponding to O-11 (Difco). The rash subsided promptly and spontaneously. Furthermore, we have encountered another case of Psedomonas folliculitis caused by P. aeruginosa serogroup G, corresponding to O-6 (Difco). The maculopustular rash was distributed on the trunk and disappeared spontaneously as the cases mentioned above. The folliculitis of this baby were probably associated with the repeated use of family bath without changing water. In U.S. and Europe Pseudomonas folliculitis have been reported very frequently, but our cases were reported for the first time in Japan.