Hot tub folliculitis is different in that it is caused by Pseudomonas aeruginosa. Pseudomonas survives in hot tubs, especially the wood type, unless the pH and chlorine content are strictly controlled. Hot tub folliculitis becomes noticeable within half a day to two days after exposure. The rash may be denser under swimsuit areas where the material has held the contaminated water in contact with the skin for a longer period of time. Physical examination combined with a history of recent hot tub use are sufficient for your health care provider to make this diagnosis.
Testing is usually unnecessary.
Treatment may not be needed. Topical anti-pseudomonal antibiotics are usually effective. The condition generally clears up spontaneously. Antibiotic therapy is rarely needed. Call your health care provider if the rash does not clear up with home treatment.