(partial anodontia)Oligodontia: having 6 or more congenitally missing teeth.Hyperdontia: extra teeth, same as supernumerary teeth, may be singleor multiple as in CCD.(*To see how the web site OMIM works, log on and enter hypodontia.)Congenitally missing teeth (hypodontia and oligodontia) are not rare.
1 Symptoms of mastoiditis include fluid draining from the ear, fever, headache, acute ear pain, redness and swelling behind the ear and loss of hearing. 2  Antibiotics are used to treat mastoiditis. 3  Swimmer's Ear-Infection of the outer ear canal is termed swimmer's ear.
Painful lumps behind ear causes include: 1  Abscess â These are lumps that develop when tissue or cells become infected. 2  Dermatitis â This takes place when waxy dead skin cells or dry skin builds up and is joined by inflammation and redness. 3  Mastoiditis â The mastoid bone is found behind the ear and can get infected.