Hot tub folliculitis is an infection of the skin around the lower part of the hair shaft (hair follicles). It occurs when you come into contact with certain bacteria that live in warm and wet areas.
Hot tub folliculitis is caused by Pseudomonas aeruginosa, a bacteria that survives in hot tubs, especially tubs made of wood. The bacteria can also be found in whirlpools and swimming pools.
The first symptom of hot tub folliculitis is an itchy, bumpy, and red rash. Symptoms can appear from several hours to 5 days after contact with the bacteria.
The rash may:
Other people who used the hot tub may have the same rash.
Your health care provider can often make this diagnosis based on looking at the rash and knowing that you have been in a hot tub. Testing is usually not needed.
Treatment may not be needed. The mild form of the disease often clears on its own. Anti-itch medicines may be used to ease discomfort.
In severe cases, your provider may prescribe an antibiotic.
This condition usually clears without scarring. The problem may come back if you use the hot tub again before it has been cleaned.
In rare cases, a collection of pus (abscess) may form.
Call your health care provider if you develop symptoms of hot tub folliculitis.
Controlling the acid levels and chlorine, bromine, or ozone content of the hot tub may help prevent the problem.
Reviewed By: Michael Lehrer, MD, Clinical Associate Professor, Department of Dermatology, University of Pennsylvania Medical Center, Philadelphia, PA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.