Pain in the ear can occur because of conditions within the ear, the ear canal, or affecting the visible portion of the ear (the pinna). Acute middle ear infection, medically called acute otitis media, is inflammation of the middle ear and is the most frequent diagnosis in sick children in the U.S. The eustachian tube is shorter in children than adults which allows easy entry of bacteria and viruses into the middle ear, resulting in acute otitis media.
Infection of the ear canal (otitis externa) is also called swimmer's ear. Otitis externa is typically caused by bacterial infection.
Earache can also be caused by pain and inflammation of the outer portion of the ear (the pinna).
A child with a draining ear should not fly (or swim).
Also spelled "ear ache"
MedicineNet.com. Earache Symptoms.