An 11-month-old boy comes to a clinic with a 1-week history of an itchy red rash under his arms. The rash seems to bother him more at night, and he has no fever.
• What is your preliminary impression?
• What labs do you recommend (be specific and give a reason, i.e., what do you expect to see in the report that can lead you to your final impression of the case? For example, a blood smear to see malarial parasites).
• Treatment OR Prevention.