Dani C. is a 20-year-old female presenting for evaluation with a chief complaint of "My ear hurts". Vital signs are as follows: Temp 99.3 F HR 92 RR 18 BP 130/82 SpO2 98% room air No known drug allergies Before you walk into the room to evaluate Dani, it can be helpful to have some possible differential diagnoses in mind. List at least 6 possible causes of ear pain. The Dains text, the Symptom to Diagnosis text (Available online through Access Medicine), or this week's powerpoint presentations are all good resources for developing a broad list of differentials for the chief complaint of "ear pain