Hot tub folliculitis

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Hot tub folliculitis
Other names: Pseudomonas aeruginosa folliculitis
Pseudomonas folliculitis, also known as hot tub folliculitis

Hot tub folliculitis (pseudomonal folliculitis) is a common type of folliculitis, a condition which causes inflammation of hair follicles.[1]

This condition is caused by an infection of hair follicles by a non-pathogenic strain of the bacterium Pseudomonas aeruginosa. The bacterium is commonly found in hot tubs, water slides, and rarely in swimming pools. Children are more prone because they typically stay in the water longer than adults.[citation needed] 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.[2]

Normally, the rash does not need specific treatment and will go away on its own.[3] Antibiotics may be prescribed in some cases. If the rash continues to appear longer than the 7- to 10-day time period, a physician should be consulted. Folliculitis that is not treated properly could worsen and cause abscesses.[citation needed]

Signs and symptoms

Hot tub folliculitis can be extremely painful and/or itchy, and left alone without scratching will go away much more quickly. If the rash is aggravated, it can stay, worsen, and spread, lasting for months. By that time, it is much more difficult to treat. In an immunocompetent person, the rash is self-limited and will usually resolve after about 7 to 10 days but the condition can leave a hyperpigmented lesion that goes away after a few months.[citation needed]

See also


  1. James, William D.; Elston, Dirk; Treat, James R.; Rosenbach, Misha A.; Neuhaus, Isaac (2020). "14. Bacterial infections". Andrews' Diseases of the Skin: Clinical Dermatology (13th ed.). Edinburgh: Elsevier. p. 270. ISBN 978-0-323-54753-6. Archived from the original on 2023-06-30. Retrieved 2023-06-01.
  2. "Swimmer's Itch and Hot Tub Folliculitis". Advanced Dermatology. May 23, 2019. Archived from the original on November 27, 2020. Retrieved November 19, 2020.
  3. Goodheart, Herbert P. (2010). Goodheart's same-site differential diagnosis : a rapid method of diagnosing and treating common skin diseases. Philadelphia, Pa.: Lippincott Williams & Wilkins. p. 296. ISBN 978-1605477466.