Pseudomonas folliculitis L08.8

Authors: Prof. Dr. med. Peter Altmeyer, Dr. med. Fabian Müller

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Last updated on: 19.10.2023

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Synonym(s)

Hot-tub dermatitis; Hot tub dermatitis (e); Jacuzzidermatitis; Swimming pool dermatitis; Whirlpool dermatitis

History
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Mc Causland 1976

Definition
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Harmless infectious disease of the skin originally described in the USA, now occurring worldwide, occurring 8-48 hours after bathing in warm water contaminated with Pseudomonas spp. The disease occurs more frequently in the cold season (note: this is probably related to the increased use of warm communal bathrooms in winter).

Pathogen
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Especially Pseudomonas aeruginosa. Pseudomonas spp. can persist as a water germ in water pipes, especially in hot water boilers or in whirlpools (whirlpool dermatitis).

Etiopathogenesis
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Risk factors are high water temperature, water turbulence with air admixture, low chlorine content or resistance of the pathogen to chlorine.

Clinical features
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Strongly pruritic, follicularly accentuated, maculopapular, also pustular dermatitis with accentuation of the runpf and here especially of the lateral throax sections.

Association with fever, pharyngitis, conjunctivitis, mastitis (painful) and painful axillary lymphadenopathy (bacterial toxin effect), nausea and vomiting.

Less common is the simultaneous occurrence of painful papules and nodules on the palms and/or soles of the feet (whirl-pool dermatitis with "hot hands/feet - see also hot-foot syndrome).

Differential diagnosis
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Scabies: evidence of the characteristic ganglionic structures

Prurigo simplex subacuta: Eminently chronic, polyetiologic, endogenously triggered, often accompanied by intolerable itching 0or also painful itching, papular, inflammatory disease of the skin with typical, disseminated, symmetrical distribution pattern.

Varicella and other viral exanthema: acute onset with involvement of oral mucosa and capillitium. Mostly endemic distribution.

Non-tuberculous mycobacteriosis (e.g., M. intermedium): M. intermedium can be transmitted by contaminated water from hot tubs and causes granulomatous dermatitis (see Fig.).

General therapy
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Spontaneous healing after 10-14 days. Systemic antibiotics and local antiseptics do not seem to influence the exanthema.

External therapy
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Good effects were reported with a 0.2% gentamicin lotio (0.2% gentamicin in lotio alba aquosa). Alternatively 0.1% gentamicin cream(Refobacin® or as formulation: gentamicin cream 0.1%).

Internal therapy
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If spontaneous healing does not occur, or if external measures are not sufficient, it is recommended to use ciprofloxacin (e.g. Ciprobay) 250 mg p.o. 2 times/day.

In severe cases, ceftazidime (e.g., Fortum) 2-3 times/day 1-2 g i.v.

Alternatively (e.g., in penicillin allergy): Tobramycin (e.g., Gernebcin) adults 3-5 mg/kg bw/day i.m. or i.v. divided into 3 EDs (30-60 min short infusions). Children: 5-7 mg/kg bw/day i.m. or i.v. divided into 3-4 ED.

Progression/forecast
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Spontaneous healing after 10-14 days. Septic complications are rare.

Note(s)
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Through whirlpool baths other infections can be transmitted, even if rarely, e.g. atypical mycobacteria.

Case report(s)
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A 35-year-old man complaining of great stress noticed a sudden itchy rash on the trunk. At the same time, slight malaise, pulling of the chest muscles ("like sore muscles"), painful lump in the right axilla.

Findings: On the shoulders, upper arms and front of the trunk, highly red, maculopapular dermatitis with follicularly bound red papules and few pustules. Right-sided dolled axillary lymphadenopathy.

Smear pustule: abundant Pseudomonas aeruginosa, also Staphylococcus aureus.

On inquiry: New Year's vacation together with 2 friends. Use of the in-house hot tub. Skin symptoms 2 days later.

Therapy: Ciprofloxacin 2 times/day 250 mg p.o. for 5 days and external application of a 0.2% gentamicin lotio for 5 days.

Literature
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  1. Berrouane YF (2000) Outbreak of severe Pseudomonas aeruginosa infections caused by a contaminated drain in a whirlpool bathtub. Clin Infect Dis 31: 1331-1337
  2. Edson RS et al (2006) Mycobacterium intermedium granulomatous dermatitis from hot tub exposure. Emerg Infect Dis 12: 821-3
  3. Schirren CG et al (1992) Whirlpool dermatitis: A new epidemic recreational dermatosis. Dt Ärztebl 89: 1756-1758
  4. Silverman AR et al (1983) Hot tub dermatitis: a familial outbreak of Pseudomonas folliculitis. J Am Acad Dermatol 8:153-156

  5. Yu Y et al (2007) Hot tub folliculitis or hot hand-foot syndrome caused by Pseudomonas aeruginosa. J Am Acad Dermatol 57:596-600

Disclaimer

Please ask your physician for a reliable diagnosis. This website is only meant as a reference.

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Last updated on: 19.10.2023