Q: How can I tell if my daughter’s rash is something a doctor should look at?
A: Diaper rashes that persist longer than 3-4 days and don’t respond to your usual diaper cream should be checked: The rash may be caused by candida (yeast, a fungus) and require antifungal therapy.
Rashes elsewhere on the body should be checked whenever they are painful, persistent, itchy (without responding to simple home treatments for itching) or worsening. A rash should be evaluated promptly if it occurs at a time when your child looks very sick to you.