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Usually presents as mild itchy pustules on an erythematous base on any part of hair-bearing skin, typically caused by S. aureus and Pseudomonas aeruginosa.
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Pseudomonas folliculitis can cause confusion, the typical features being:
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rapidly spreading rash
mainly on trunk, buttocks and thighs
itchy
small pustules surrounded by circular red-purple halo
follows immersion in a hot spa bath or tub
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Treatment is based on the sensitivity of the cultured organisms (e.g. ciprofloxacin).
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Folliculitis of groin Folliculitis of the groin area is common in women who shave and tends to recur.
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Prior to shaving, wash the skin with warm water and a soap substitute
If persistent, use benzoyl peroxide 5% gel or solution topically, twice daily
If severe, use mupirocin 2% (Bactroban) ointment or oral antibiotics, di(flu)cloxacillin 500 mg or cephalexin 500 mg (o), qid for 5–7 d, or clindamycin 450 mg tds for 5–7 d
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Folliculitis of trunk from spa baths Due to Pseudomonas aeruginosa or S. aureus (in poorly chlorinated water maintained at 37–40°C).
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