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.
There are two major categories of hearing loss: 1  Central hearing loss involves problems with processing information in the brain. 2  Peripheral hearing loss refers to problems with the ear structures. There are three types of peripheral hearing loss: Conductive hearing loss is the most common type in children. It occurs when the transmission of sound through the external or middle ear is blocked. The condition can be temporary or permanent. It can occur in one or both ears. Sometimes this type of hearing loss is caused by physical abnormalities that are present from birth. More commonly, it begins during childhood as the result of middle ear infections. Other causes include perforation of the eardrum, impacted earwax or objects in the ear canal.