Bump Behind Ear: The most common cause of a bump behind the ear is a cyst that must be surgically excised. Other causes include:recurrent scalp infections, thyroid (hyperthyroidism), lymphoma or tumor of lymph node, dermatitis, hodgkin's disease (cancer of lymph tissue), cat allergies and others.
Answered 10/29/2012
5.5k views
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question