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.