There are many Varied Causes of Dizziness

November 12, 2012

There are many Varied Causes of Dizziness

There are various causes of dizziness ranging from common to rare but if you experience any forms of dizziness consult with your doctor. To maintain the balance of the body, the brain receives nerve signals from various sections of the body. If there is a problem with the eyes, inner ears or incorrect signals being received by the brain, you may experience dizziness. If everything is functioning as it should good balance will be maintained. Vertigo causes dizziness whereby a spinning sensation and unsteadiness is experienced. You may feel nausea or sick. Vertigo tends to lessen by lying flat and exacerbated by moving about or sitting up. This is usually caused by inflammation or damage to the vestibular nerve or the labyrinth and also if there is a problem with sight. When the nerves of the vestibular or labyrinth sends incorrect signals to the brain and conflict occurs with other signals eyes, body, the unaffected ear gets confused which results in vertigo. The brain gets overloaded with nerve signals and is unable to cope. Once this spinning sensation stops the symptoms tend to settle but it may take a couple of hours or even longer to go away. One of the many causes of dizziness is labyrinthitis which occurs because of a viral infection. Vertigo is a common effect of viral labyrinthitis accompanied by sickness and nausea. Slight loss of hearing may also develop on the affected ear. Effects of viral labyrinthitis can last for a couple of days to a number of weeks, and then usually clears completely. If this is not the case there may be an underlying cause which should be investigated. Vestibular neuritis is not unlike labyrinthitis apart from the inflammation occurs in the vestibular nerve. It can sometimes be impossible to determine the difference between labyrinthitis and vestibular neuritis, but the common cause appears to be a viral infection. The symptoms of this infection normally clear completely. BBPV (Benign paroxysmal positional vertigo) presents as sudden episodes of vertigo which only last for a couple of seconds to minutes. The cause of this is a tiny piece of solid material becoming loose and moving within the fluid inside the labyrinth and when the head is moved in a particular way it stimulates hairs inside the semi circular canal part of labyrinth which are extremely sensitive. This action sends incorrect signals to the brain about the position of the head therefore vertigo occurs. M niere’s disease is a condition which can cause periods of tinnitus, hearing loss and vertigo and these symptoms vary in their occurrence and severity. It can last for 20 minutes up to many hours and permanent loss of hearing and tinnitus may develop. M niere’s disease is thought to be caused by fluid building up in the labyrinth and pressure and swelling may occur. Central vertigo is another cause of dizziness which occurs due to a problem with the brain as opposed to peripheral vertigo which is related to one of the ear conditions listed above. Other causes of dizziness include conditions which can cause central vertigo such as migraine and the dizziness tends to happen to people before the headache develops. An acoustic neuroma is a non cancerous tumor which grows on the acoustic nerve. This disorder is rare and symptoms include vertigo, tinnitus, hearing loss and these symptoms are continuous. Uncommon causes of dizziness include a variety of conditions of the brain such as problems with blood vessels in the brain and nerves, e.g.multiple sclerosis or a stroke. There are many problems related to lack of balance which may be due to ear problems but do not have the symptoms of vertigo. These are nerve disorders which mean the legs do not function well, multiple sclerosis, peripheral neuropathy or disorders of the brain caused by a stroke or tumor. If the section of the brain which helps to control posture and balance has been affected then frailty and serious illness accompanied by other symptoms along with the imbalance will appear. And of course many diverse drugs and alcohol can be causes of dizziness.

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