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.
Sounds become blocked and are not carried to the inner ear. Conductive hearing losses are often treatable with medicine or surgery. Common causes are fluid behind the eardrum or wax buildup in the ear canal. Conductive hearing loss also can occur when the eardrum or bones of the middle ear are disrupted.