What should you know about swimming pool folliculitis treatment?

Pool folliculitis, also called hot-tub or Pseudomonas folliculitis, can follow swimming in a pool, spa or hot tub where bacteria remain in the water. Small red bumps, pus-filled spots or tender areas develop around hair follicles, often beneath a swimsuit or on areas that stayed wet.

The rash may appear after a delay and can itch or feel sore. It is different from a simple chlorine irritation, although both can occur after swimming. A clinician may consider the timing, appearance and exposure history; testing or a swab may be useful when the illness is persistent, recurrent or atypical.

Shower after leaving the water, gently wash the affected skin and change out of wet swimwear. Keep the area dry, avoid shaving or scrubbing the bumps, and do not share towels. A mild, fragrance-free moisturiser can help surrounding irritation if it does not sting.

Many uncomplicated cases improve without prescription medicine. If spots continue, spread or recur, a clinician may prescribe treatment suited to the suspected organism. Do not use leftover antibiotics or squeeze the lesions. Clean swimwear and towels thoroughly before reuse, and avoid the suspected pool or hot tub until it has been checked and the rash has settled.

Arrange medical review for fever, increasing pain, rapidly spreading redness, extensive pus, repeated episodes or symptoms that are not improving. Seek prompt care if you have reduced immunity or a condition that makes skin infections harder to control.

Ask whether the rash fits folliculitis or contact irritation, whether a swab is needed, and which cleanser or medicine is appropriate. Ask when it is safe to swim again and how to reduce the chance of another outbreak.