What is the difference between outter ear and middle ear infections?
Middle ear infections (otitis media)
As fluid collects behind the eardrum, it causes the drum to bulge, resulting in intense pain. Occasionally, the eardrum will bulge so much that it tears (this is called a burst eardrum), and you will see a thick yellow discharge come from the ear. When this happens, children often suddenly feel better, as the bulging has stopped. A burst eardrum normally heals without treatment.

Outer ear infections (otitis externa)
There can be discharge from the ear, or your child might complain of a feeling of fullness in their ear.
The ear may be red and swollen. The redness may spread beyond the ear.