Hot tub folliculitis

Hot tub folliculitis
Other namesPseudomonas aeruginosa folliculitis
Pseudomonas folliculitis, also known as hot tub folliculitis
SpecialtyDermatology 
SymptomsRash, with variable amounts of itching and pain
Usual onset24-72 hours after exposure
Duration1-2 weeks
CausesExposure to contaminated water source
Diagnostic methodBased on symptoms combined with patient history of swimming
TreatmentAntibiotics

Hot tub folliculitis, also called Pseudomonal folliculitis or Pseudomonas aeruginosa folliculitis, is a common type of folliculitis featuring inflammation of hair follicles and surrounding skin.:272

This condition is caused by an infection of the skin and hair follicles by the bacterium Pseudomonas aeruginosa. The bacterium is commonly found in poorly maintained recreational water sources such as hot tubs, water slides, and swimming pools. Hot tub folliculitis appears on the skin in the form of a rash, roughly resembling chicken pox and then develops further to appear as a pimple. Children are the most likely to be affected. Hot tub folliculitis can be, but is not always, painful and/or itchy.

In most cases, the rashes resolve after about 7 to 10 days, only leaving a hyperpigmented lesion that goes away after a few months. Oral antibiotics such as ciprofloxacin may be used to shorten the duration of symptoms.