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post in: Products, Health Date:11 Oct 2017, 11:56 views:2265
Dizziness and vertigo, vertigo is often described as feeling dizzy, or as a sensation of spinning. A person may specifically mention that the allergy room seems to be spinning around them. Sometimes the complaint is loss of balance or loss of equilibrium.
This asthma often occurs because of irritation in the inner ear (the part of the ear that involves balance, not hearing ). The inner ear has two parts that help the body determine its position in space relative to gravity; 1) the semicircular cs and 2) the vestibule. There are three semicircular cs that are aligned at right angles to each other.
These cs are filled with fluid and are lined with a nerve-filled, crystal-encrusted membrane that transmits information to the cerebellum (the part of the brain that controls balance and coordination). The cerebellum collects information from the eyes (visual stimuli) and the nerve endings in muscles associated with proprioception (the perception of movement to assist the brain in assessing where the body is in relationship to gravity every time one part of it moves.
Normally, when the head moves, fluid in the semicircular cs shifts, and that information is relayed to the brain. When the head stops moving, the fluid stops as well, and that information is relayed to the brain.
In some cases there may be a short delay in the transmission of this information to the brain. For example, when a person rides on a merry-go-round or spins quickly around in circles, the fluid in the cs develop momentum and though the body stops spinning, the fluid in the semicircular cs may continue to move. This causes vertigo, or a sensation of spinning, and may cause the person to fall or stumble.
It also may be associated with vomiting. While kids try to provoke these are symptoms in play, they can be debilitating for an adult.
Inflammation: In patients with vertigo, inflammation of the fluid or irritation of the crystals on the membrane that lines the walls of the semicircular cs may cause the spinning sensation even without much head movement. Often, only one c is involved and the patient may be symptom-free if they don't move. Benign paroxysmal positional vertigo (bppv bppv may be caused when the crystals in the inner ear become dislodged and irritate the semicircular cs.
Often the cause is not found, but there may be an association with unusual positioning or movement of the head.