Sebum is an oily substance secreted by units at the base of hair.
Marble sized lump below ear.
Yes the most likely culprit is a post auricular means behind the ear lymph node but without a hands on examination and knowing your complete medical history there is no way for me to blindly.
What to do.
Causes of a hard lump under the skin can include.
Stephen rodrigues answered 37 years experience family medicine.
A cyst is a closed pocket of tissue that contains fluid or debris.
The common signs and symptoms of a bump behind ear include.
Hard or soft bump behind the earlobe small pea sized or large lump painful and itchy bump on the back of the ear.
Acne is a common skin condition that might cause a lump behind the ear.
In acne pores in the skin become blocked with sebum.
These two are just under your ear with the tonsillar lymph node located just below your parotid glands.
Cysts can form anywhere on the body.