Childhood deafness
Hearing loss or deafness may be
congenital or acquired and can be divid-ed into sensorineural (SN) or
conductive loss. Hearing loss of up to 20dB tends not to affect development,
but a loss of over 40dB will affect speech and language development.
•
Non
syndromic.
•
Syndromic:
•
Ushers
syndrome (see Table 24.2);
•
Waardenburg
syndrome (see Table 24.2).
•
Perinatal:
•
birth
asphyxia;
•
hyperbilirubinemia;
•
congenital
infection, e.g. rubella, CMV, syphilis.
•
Postnatal:
•
drugs,
e.g. aminoglycosides;
•
meningitis;
•
head
injury;
•
labyrinthitis;
•
acoustic
neuroma.
Ear canal atresia/stenosis.
•
Acute
otitis media.
•
Chronic
otitis media (tympanic perforation, cholesteatoma).
Secretory otitis media.
Related Topics
Privacy Policy, Terms and Conditions, DMCA Policy and Compliant
Copyright © 2018-2023 BrainKart.com; All Rights Reserved. Developed by Therithal info, Chennai.