Amaurosis fugax causes: Difference between revisions

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==Overview==
==Overview==
Amaurosis fugax is a symptom of [[carotid artery disease]]. It occurs when a piece of plaque in a [[carotid artery]] breaks off and travels to the [[retinal artery]] in the eye. The carotid arteries provide the main blood supply to the brain. They are located on each side of the neck under the jaw.Plaque is a hard substance that forms when fat, [[cholesterol]], and other substances build up in the walls of arteries. Pieces of plaque can block blood flow. In people with amaurosis fugax, [[vision loss]] continues as long as the blood supply to the retinal artery is blocked.
Amaurosis fugax is a symptom of [[carotid artery disease]]. It occurs when a piece of plaque in a [[carotid artery]] breaks off and travels to the [[retinal artery]] in the eye. The carotid arteries provide the main blood supply to the brain. They are located on each side of the neck under the jaw. Plaque is a hard substance that forms when fat, [[cholesterol]], and other substances build up in the walls of arteries. Pieces of plaque can block blood flow. In people with amaurosis fugax, [[vision loss]] continues as long as the blood supply to the retinal artery is blocked.
Atherosclerosis of the arteries in the neck is the main risk factor for this condition. Risk factors for atherosclerosis include [[heart disease]], [[high cholesterol]], [[smoking]], [[diabetes]], and [[high blood pressure]].
Atherosclerosis of the arteries in the neck is the main risk factor for this condition. Risk factors for atherosclerosis include [[heart disease]], [[high cholesterol]], [[smoking]], [[diabetes]], and [[high blood pressure]].


===Causes in Alphabetical Order===
===Causes in Alphabetical Order===
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*Acute [[hypovolemia]]
*Acute [[hypovolemia]]
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*[[Hypotension]]
*[[Hypotension]]
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*[[Hypovolemia]]
*[[Hypovolemia]]
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*Very [[dry skin]]
*Very [[dry skin]]
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==References==
==References==

Revision as of 18:34, 27 February 2013

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor-In-Chief: Marcelo R. Zacarkim, M.D. [2]

Overview

Amaurosis fugax is a symptom of carotid artery disease. It occurs when a piece of plaque in a carotid artery breaks off and travels to the retinal artery in the eye. The carotid arteries provide the main blood supply to the brain. They are located on each side of the neck under the jaw. Plaque is a hard substance that forms when fat, cholesterol, and other substances build up in the walls of arteries. Pieces of plaque can block blood flow. In people with amaurosis fugax, vision loss continues as long as the blood supply to the retinal artery is blocked. Atherosclerosis of the arteries in the neck is the main risk factor for this condition. Risk factors for atherosclerosis include heart disease, high cholesterol, smoking, diabetes, and high blood pressure.

Causes in Alphabetical Order

  • Blood coagulability
  • Blood coagulation disorders
  • Blood viscosity
  • Branch retinal artery occlusion
  • Carotid occlusive disease
  • Central retinal artery occlusion
  • Chiasm compression
  • Decreased blood flow (ischemia) to the retina
  • Disease susceptibility
  • Distal internal carotid artery atheroembolism
  • Excess fat
  • Extracranial arterial occlusive disease
  • Ipsilateral carotid disease
  • Irregular ulcerated lesion
  • Neurologic disorder
  • Nonvascular ophthalmic disorder
  • Retinal vein occlusion
  • Sudden vision changes


References