When this happened to me it was from wearing earrings that had metal in them I was allergic to (nickel), and an infection developed. I only wear nickel free jewelry now. After the infection went away, the little nodule behind my ear stayed for years, and slowly went away.
NOTICE: The information provided on this site is not a substitute for professional medical advice,
diagnosis, or treatment. Never delay or disregard seeking professional medical advice from your
physician or other qualified health provider because of something you have read on Wellsphere.
If you have a medical emergency, call your doctor or 911 immediately.