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Hallucinogen-persisting perception disorder was first described in 1954, [9] with other observations made in early psychedelic research. [10] Horowitz [11] first introduced the term flashbacks, referring to recurrent and spontaneous perceptual distortions and unbidden images. When these "flashbacks" present as recurrent, but without a current ...
It is difficult to resolve visual snow with treatment, but it is possible to reduce symptoms and improve quality of life through treatment, both of the syndrome and its comorbidities. [4] In some studies, lamotrigine as a treatment for visual snow syndrome only showed efficacy in 20% of patients, and in one study, patients using lamotrigine ...
Illusory palinopsia is often worse with high stimulus intensity and contrast ratio in a dark adapted state.Multiple types of illusory palinopsia often co-exist in a patient and occur with other diffuse, persistent illusory symptoms such as halos around objects, dysmetropsia (micropsia, macropsia, pelopsia, or teleopsia), Alice in Wonderland Syndrome, visual snow, and oscillopsia.
Closed-eye hallucinations and closed-eye visualizations (CEV) are hallucinations that occur when one's eyes are closed or when one is in a darkened room. They should not be confused with phosphenes, perceived light and shapes when pressure is applied to the eye's retina, or some other non-visual external cause stimulates the eye.
“The stress from shoveling snow combined with the bitter cold can be dangerous, causing an increase in blood flow and blood pressure,” explains Dr. Patrick Kee, MD, Ph.D., a medical director ...
People with heart conditions are more likely to have a cardiac event when shoveling snow, and people with musculoskeletal conditions or impaired balance are at higher risk for fall injuries.
A multi-day lake effect snow event off Lake Erie is ongoing, making travel "very difficult" throughout the Great Lakes region as a total of 3-12 inches of new snow was produced near Cleveland ...
Life expectancy may be shortened by respiratory complications arising from weakness of the muscles that aid breathing and swallowing. It was first described in four patients by Vucic and colleagues [ 3 ] working at the Massachusetts General Hospital in the United States ; subsequent reports from the United Kingdom, [ 4 ] Europe and Asia [ 5 ...