Final answer:
To prevent a rash, patients should avoid skin-to-skin contact with infected individuals.
Step-by-step explanation:
To prevent a rash, patients should avoid skin-to-skin contact with infected individuals. This is because many rashes can be contagious and spread through direct contact with the skin of an infected person. Other measures, such as using petroleum jelly to decrease chafing, changing out of wet clothing as soon as possible, and keeping the skin wet, can help prevent other skin conditions, but they may not specifically prevent a rash caused by an infection.