Most of the time, tender lumps behind the ears are caused by inflamed sebaceous cysts or lymph nodes. Unfortunately, however, it is not possible to provide a specific diagnosis to patients over the internet. If these lumps do not resolve over the next 3 to 4 weeks, you should try to find access to a physician or nurse for an evaluation.
Sincerely/ Robert A. Wascher, MD, FACS
www.doctorwascher.com
www.oncoguard.com