Hot Tub Rash or dermatitis is an infection of the skin.

Causes

Hot Tub Rash infections are often caused by the germ Pseudomonas aeruginosa. This germ is common in the environment (water, soil) and is microscopic so that it can’t be seen with the naked eye.

Risk Factors

Hot Tub Rash is spread by direct skin contact with contaminated water. The rash usually occurs within a few days of swimming in poorly maintained hot tubs or spas but can also be spread by swimming in a contaminated pool or lake.

Symptoms

The skin may become itchy and progress to a bumpy red rash that may become tender. There may also be pus-filled blisters that are usually found surrounding hair follicles. Because a swimsuit can keep contaminated water in longer contact with the skin, the rash may be worse under a person’s swimsuit.

Diagnosis

See a doctor to visual inspection.

Treatment

Most rashes clear up in a few days without medical treatment. However, if your rash persists, consult your healthcare provider.

Prevention

Be aware that hot tubs and spas have warmer water than pools, so chlorine or other disinfectants break down faster. This leaves hot tubs and spas at risk for the spread of RWIs. Therefore, ask your pool manager about the disinfectant and pH testing program at your hot tub or pool.

Ensuring frequent testing, control of disinfectant (usually chlorine or bromine) levels, and pH control are likely to prevent the spread of dermatitis.

References

CDC