What are the signs and symptoms of Pseudomonas folliculitis (hot tub folliculitis)?

Updated: Oct 02, 2020
  • Author: Charles B Toner, MD; Chief Editor: Dirk M Elston, MD  more...
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Pseudomonas folliculitis is characterized by a rash, described as a dermatitis or a folliculitis. The rash onset is usually 48 hours (range, 8 h to 5 d) after exposure to contaminated water, but it can occur as long as 14 days after exposure. [28]

Lesions begin as pruritic, erythematous macules that progress to papules and pustules. Lesions are most prevalent in intertriginous areas or under bathing suits. The rash usually clears spontaneously in 2-10 days, rarely recurs, and heals without scarring, but it may cause desquamation or leave hyperpigmented macules. Pseudomonas may be cultured in patients with epidermal growth factor inhibitor‒related folliculitis. [29]

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