This study is to define the etiology of vertigo and dizziness on the basis of eastern and western medical literatures. The conclusions are as follows:
1. In oriental medicine, the etioloar of vertigo and dizziness is mainly divided into external infection(èâÊï) and internal damage(Ү߿). Wind(ù¦), cold(ùÎ), dampness(ã¥), summer heat(ßô) are included in the one and in the other, Ki(vital energy)(Ѩ) and blood deficiency(ѨúìúÈ), insufficiency of the liver and kidney(ÊÜãìúÈ), retention of phlegm and fluid(ÓÃëæ), emotional disorder(öÒï×Ү߿) and so on.
2. The main etiology is the case caused by infirmity(úÈ), which is Ki(Ѩ) of the upper portion of the body being insufficient(߾ѨÜôðë), deficiency of mar°³w-reservoir(âÐúÜôðë), insufficiency of liver(ÊÜúÈ), blood depletion(úìͽ), insufficiency of YANG(åÕúÈ), vital energy and blood deficiency(ѨúìúÈ) etc.
3. The etiology of vertigo and dizziness is contrarily mentioned as excess in the upper and dificiency in the lower(ß¾ãùù»úÈ) and deficiency of the ewer portion of the body(ß¾úÈ), but both are ultimately recognized as the concept of infirmity. Furthermore, upper excess can be the case that invades the brain of the weakened body through wind-heat, phlegm-fire, dampness, etc.
4. Vertigo and dizziness arises from an abnormality of the vestibular system but less commonly can be produced by visual or somatic sensory disorders.
5. Vestibular vertigo can be caused by disease of either the peripheral or central vestibular apparatus. Peripheral causes of vertigo no peripheral vestibulopathy, Meniere¡¯s syndrome, vestibulotoxic drugs, and central causes of vertigo are cerebrovascula disease, cerebellopontine angle tumors, demyelinating disease. Systemic causes are drug, hypotension, endocrinosis.
6. In comparative study between eastern and western medicine on the etiology of vertigo and dizziness, the peripheral causes are the dysfunction of liver and kidney, wind(ù¦), phlegm(ÓÃ), fire(ûý) and central causes are wind-heat(ù¦æð), phlegm-fire(ÓÃûý), dampness(ã¥) which invades the brain of weakened body. Systemic causes are the insufficiency of liver and kidney(ÊÜãìúÈ), vital energy and blood deficiency(ѨúìúÈ), emotional disorder(öÒï×Ү߿).
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