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Frightening Dizziness
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Frightening Dizziness

I often experience extreme lightheadedness, dizziness, loss of peripheral vision, feeling faint, and muscle spasms/sudden loss of strength in my arms or legs when I stand up.  I have a desk job, and have always attributed these episodes to standing up too fast.  However, these episodes are becoming alarmingly frequent and intense, and I often have to lean against a wall to avoid falling down, for up to five minutes.  I am overweight, but my blood pressure is normal.  I take 20mg. flouexitine daily, at bedtime.  I am worried that this is more serious than inner ear or low blood pressure.  Any thoughts?
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1756321 tn?1377771734
Orthostatic hypotension symptoms include:

Feeling dizzy or lightheaded upon standing
Syncope (fainting)
Blurred vision
Disorientation or confusion
Feeling weak
Chest pain

Syndromes with orthostatic dizziness or lightheadedness, not associated with low blood pressure include:

* Positional orthostatic tachycardia (POT) syndrome. The pulse races on standing.
* Low CSF pressure syndrome
* Primary orthostatic tremor
* Positional vertigo (i.e. BPPV)

Other causes of orthostatic hypotension include the following:

* Aging
* Cardiogenic (heart related) orthostatic hypotension.
* Hypovolemia (a drop in the volume of blood).
* Dehydration (low fluid volume in the body)
* Immobility (for instance, staying in bed for a long time)
* Primary adrenal insufficiency
* Pregnancy
* Heart conditions, including heart attack, heart failure, and valve disease
* Anaemia (low red blood cell count)
* Neurogenic orthostatic hypotension
* Sensory neuropathies
* Diseases of the endocrine system, including diabetes and thyroid conditions
* Medication (high doses of blood pressure medications or medications for depression)
* Hot weather
* Multiple system atrophy, Shy-Drager, Parkinson's, dementia with Lewy bodies.  
* Medullary strokes or injuries (rare)
* Wernickes syndrome (rare, related to thiamine deficiency)
* Peripheral neuropathy, especially diabetes and amyloidosis
* Spinal cord lesions
* PAF - pure autonomic failure or idiopathic orthostatic hypotension.
* Dopamine beta-hydroxylase deficiency (hereditary, very rare)

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