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Orthostatic hypotension can be caused by several different disorders that affect the entire body (systemic disorders), the central nervous system (CNS, consisting of the brain and spinal cord), and the autonomic nervous system (peripheral autonomi...
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Orthostatic hypotension has many possible causes. The most common cause is medications used to treat other conditions. Diuretics reduce the amount of fluid in the body which reduces the volume of blood. Medicines used to expand the blood vessels i...
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Low blood pressure, or hypotension, occurs when blood pressure during and after each heartbeat is much lower than usual. This means the heart, brain, and other parts of the body do not get enough blood. See also: Blood pressure
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Hypotension is the medical term for low blood pressure.
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Doctors often consider chronically low blood pressure too low only if it drops suddenly or causes noticeable symptoms.
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While recommended healthy blood pressure levels have decreased, lowering diastolic pressure too much could deprive the heart of needed blood flow, which could be dangerous for people with coronary artery disease.
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Preliminary studies show that a promising new drug may treat the symptoms of low blood pressure.
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Visual disturbances are abnormalities of sight. Visual disturbances associated with neurological disorders often include double vision (diplopia), moving or blurred vision due to nystagmus (involuntary rapid movements of the eyes), reduced visual acuity, reduced visual field, and partial or total loss of vision as in papilledema, a swelling of the optic disc, or in blindness. Visual disturbances are often symptoms of other disorders, in particular neurological disorders, but can also occur due to muscular disorders, vascular diseases, cancer, or trauma. Additionally, diseases such as diabetes and hyperthyroidism can contribute to the visual abnormalities. Some visual disturbances arise from congenital conditions that are often hereditary.
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Feeling lightheaded is a sensation that may precede syncope or fainting. It is usually
experienced when in an upright position (standing or sitting). If
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Dizziness is a general term that describes sensations of imbalance and unsteadiness, such as vertigo, mild turning, imbalance, and near fainting or fainting. Feelings of dizziness stem from the vestibular system, which includes the brain and the parts of the inner ear that sense position and motion, coupled with sensory information from the eyes, skin, and muscle tension.
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When the brain receives conflicting signals, or when there is a problem with blood flow, dizziness or fainting can occur.
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Confusion is the inability to think with your usual speed or clarity, including feeling disoriented and having difficulty paying attention, remembering, and making decisions.
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Total blindness is the inability to tell light from dark, or the total inability to see. Visual impairment or low vision is a severe reduction in vision that can't be corrected with standard glasses or contact lenses and reduces a person's ability to function at certain or all tasks. Legal blindness (which is actually a severe visual impairment) refers to a best-corrected central vision of 20/200 or worse in the better eye or a visual acuity of better than 20/200 but with a visual field no greater than 20° (e.g., side vision that is so reduced that it appears as if the person is looking through a tunnel).
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What Is Low Vision?When you have low vision, you need more than glasses or contact lenses to see well enough to get around and do day-to-day tasks.
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Detailed information on problems with vision in children
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Detailed information on problems with vision in children
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If you have low-vision symptoms, talk to your eye-care professional, who can help you find resources and visual devices to make the most of your remaining vision.
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Treatment for Low VisionUsing vision aids can help you do the things you need and want to do. There are many kinds of vision aids.
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The number of people losing their vision is growing, yet experts say much of this vision loss could be prevented.
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Detailed information on correcting or improving vision problems
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Have you noticed the sudden onset of any of these symptoms: vision loss, seeing double, the feeling of a shade over the eye, lights are surrounded by halos, or light sensitivity?
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Reports of a rare eye condition developing in men after use of Viagra are a reminder that erectile dysfunction medications should be used with the same caution given to other prescription drugs.
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Hazy vision, cloudy vision, blurred vision are all problems with seeing clearly. Any
change in your normal vision is cause for concern and is a good reason to call a doctor for
an examination.
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