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.
Types of Hearing Loss. Conductive hearing loss happens because of a problem in the ear canal, eardrum, or the middle ear that prevents sound from carrying well to the inner ear. An ear infection, trauma, a tumor, or fluid or an object in the ear (such as wax buildup) can cause it.