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In September 2021, two studies [30] found white matter alterations in parts of the visual cortex and outside the visual cortex in patients with visual snow syndrome. In November 2023, a study [ 31 ] revealed that glutamate and serotonin are involved in brain connectivity alterations in areas of the visual, salience, and limbic systems in VSS.
The content of hallucinations varies as well. Preliminary research has found that most individuals had multiple types of visual hallucinations. [20] Scenes involving people and/or animals were the most common, followed by simple geometric images. [4] Complex (formed) visual hallucinations are more common than Simple (non-formed) visual ...
Peduncular hallucinosis (PH) is a rare neurological phenomenon that causes vivid visual hallucinations that typically occur in dark environments and last for several minutes. Unlike some other kinds of hallucinations, the hallucinations that patients with PH experience are very realistic, and often involve people and environments that are ...
This is a powerful type of drug treatment for cancer patients. ... Causes of brain fog: Oregon Health and Science University Symptoms of brain fog: Cleveland Clinic. Show comments.
Depending on the content, visual hallucinations can be classified as either simple or complex. [1] Simple visual hallucinations are commonly characterized by shapes, photopsias, and grid-like patterns. [6] Complex visual hallucinations consist of highly detailed representations of people and objects. [6]
This underlying cause is reversible if you quit the meds, but other reversible causes might not be so obvious. Depression or major stress could cause impairment to show up in testing, too, Boyle says.
Hallucinogen persisting perception disorder (HPPD) is a non-psychotic disorder in which a person experiences apparent lasting or persistent visual hallucinations or perceptual distortions after using drugs, [1] including but not limited to psychedelics, dissociatives, entactogens, tetrahydrocannabinol (THC), and SSRIs.
Brain fog during menopause could also "be related to changes in the hypothalamus at the base of the brain, which we know occurs from the decreasing levels of estrogen," Minkin says.