Authoritarian regimes are also sometimes subcategorized by whether they are personalistic or populist. Personalistic authoritarian regimes are characterized by arbitrary rule and authority exercised mainly through patronage networks and coercion rather than through institutitions and formal rules..
Common causes of conductive hearing loss include: 1  Cerumen (earwax) or foreign body in the external auditory canal. 2  Otitis externa, infection or irritation of the outer ear.  Exostoses, abnormal growth of bone within the ear canal.
In rare cases, tumours can also cause conductive hearing loss â they block sound from getting into the inner ear. Birth defects and diseases passed on by genes can do this, too. Genetics is one cause of sensorineural hearing loss. Half of all cases of profound deafness in children have a genetic source.