Vertigo is a medical condition characterized by a person's sensation that he/she or his/her environment is moving or spinning. The sensation of movement is called subjective vertigo whereas the perception of movement in surrounding objects is called objective vertigo. Vertigo is often associated with problems in the brain or the inner ear. The causes of vertigo can be classified into central (involves the brain) causes and peripheral (involves the nerves) causes. The most common causes of vertigo are peripheral that involve the inner ear. Benign Paroxysmal Positional Vertigo is the most common form of vertigo and is characterized by the sensation of motion initiated by sudden head movements or moving the head in a certain direction. Vertigo may also be caused by labyrinthitis (inflammation within the inner ear), which is characterized by the sudden onset of vertigo and may be associated with hearing loss.