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Scintillating scotoma is a common visual aura that was first described by 19th-century physician Hubert Airy (1838–1903). Originating from the brain, it may precede a migraine headache , but can also occur acephalgically (without headache), also known as visual migraine or migraine aura. [ 4 ]
Scintillating scotoma is a common visual aura in migraine. [4] Less common, but important because they are sometimes reversible or curable by surgery, are scotomata due to tumors such as those arising from the pituitary gland, which may compress the optic nerve or interfere with its blood supply. Rarely, scotomata are bilateral.
Photopsia; This is an approximation of the zig-zag visual of a scintillating scotoma as a migraine aura. It moves and vibrates, expanding and slowly fading away over the course of about 20 minutes.
Scintillating scotoma is the most common symptom [11] which usually happens concurrently with Expanding Fortification Spectra. [12] Also frequently reported is monocular blindness. [13] Acephalgic migraines typically do not persist more than a few hours and may last for as little as 15 seconds. [14] On rare occasions, they may continue for up ...
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The scintillating scotoma of migraine in humans may be related to the neurophysiologic phenomenon termed the spreading depression of Leão. [13] Increased extracellular potassium ion concentration and excitatory glutamate contribute to the initiation and propagation of cortical spreading depression, which is the underlying cause of migraine ...
Laverne&Shirley actor David Lander died Friday at age 73, after decades of fighting multiple sclerosis, a potentially disabling disease of the brain and spinal cord. "My doctor painted a fairly ...
Scientists have identified a biomarker for Alzheimer's that may help doctors spot the early signs of protein buildup in the brain before it causes significant damage. New test may detect Alzheimer ...