3) Gram-negative folliculitis

It is a bacterial infection that causes acne-like symptoms. Escherichia coli, Proteus spp, Klebsiella species, Serratia marcescens, and Pseudomonas aeruginosa are all causing Gram-negative bacteria. Long-term therapy is required and uses topical tetracycline or another antibiotic. Gram-negative bacteria can also cause the following skin conditions:
- Pseudomonas infection causes folliculitis in spa pools. This organism can endure the hot pool’s higher temperatures, increased alkalinity, and high organic content.
- Folliculitis caused by Aeromonas hydrophila, which develops in a skin injury that has been exposed to contaminated fresh water.



