The ear canal is the tube that connects the outside of your ear to your eardrum.
"Derm" is a medical term for skin, and "-itis" means inflammation. So, dermatitis is inflamed skin. Dermatitis of the ear canal is itchy, flaky, and swollen skin at the opening of your ear and inside your ear canal.
You'll have symptoms in and around your ear canal, such as:
The cracked skin sometimes lets bacteria into the skin of your ear canal. The bacteria can cause an infection called external otitis.
Doctors will tell you to: