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..
Fluid accumulation is the most common cause of conductive hearing loss in the middle ear, especially in children. Major causes are ear infections or conditions that block the eustachian tube, such as allergies or tumors.
Otitis media is the most common cause of conductive hearing loss in children.6 Middle ear effusions decrease the mobility of the tympanic membrane and the ossicular chain. This loss of mobility results in an average hearing loss of 20 to 30 dB.