What is the main cause of hot tub rash?

The primary cause of hot tub rash, also known as Pseudomonas folliculitis, is Pseudomonas aeruginosa. This bacterium is commonly found in warm, moist environments such as hot tubs, swimming pools, and even natural bodies of water. When people use hot tubs that are not properly sanitized or maintained, the bacteria can thrive and lead to infections of hair follicles, resulting in a rash that typically appears as itchy, red bumps.

Pseudomonas aeruginosa is notable for its resilience and ability to survive in various environments, making it a frequent contaminant in inadequately treated water. The presence of this organism underscores the importance of regular maintenance and appropriate water treatment in recreational water facilities to prevent outbreaks of hot tub rash and other related infections.

In contrast, other bacteria listed, such as Escherichia coli, Staphylococcus aureus, and Salmonella, are associated with different types of infections and are less commonly linked to rash conditions arising from hot tub use. Ensuring that hot tubs are properly chlorinated and maintained can significantly reduce the risk of infection by Pseudomonas aeruginosa, providing a safer and more enjoyable experience for users.