<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have a diaper rash and also have been experiencing vomiting, fever, redness in my ear, and nasal congestion. What could be the reason for it?  <response>: It seems like you have a case of viral infection, which is causing your symptoms, including the diaper rash. We can prescribe some creams and ointments to alleviate your diaper rash, and suggest some over-the-counter medications to reduce your fever and nasal congestion. However, its important to stay hydrated by drinking fluids and getting enough rest. 