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Even though people of all ages may be affected by Charles Bonnet syndrome, those within the age range of 70 to 80 are primarily affected. [1] Among older adults (> 65 years) with significant vision loss, the prevalence of Charles Bonnet syndrome has been reported to be between 10% and 40%; a 2008 Australian study found the prevalence to be 17.5 ...
Musical hallucinations (also known as auditory hallucinations, auditory Charles Bonnet Syndrome, and Oliver Sacks' syndrome [1]) describes a neurological disorder in which the patient will hallucinate songs, tunes, instruments and melodies.
The differential diagnosis includes entopic phenomena, which are visual images produced within the eye and reflected to the retina. Frequent causes of hallucination include release phenomena (due to impairment of vision) such as Charles Bonnet Syndrome.
About 30% of patients report visual hallucinations of the removed eye. [1] Most of these hallucinations consist of basic perceptions (shapes, colors). In contrast, visual hallucinations caused by severe visual loss without removal of the eye itself (Charles Bonnet syndrome) are less frequent (prevalence 10%) and often consist of detailed images.
Musical hallucinations are also relatively common in terms of complex auditory hallucinations and may be the result of a wide range of causes ranging from hearing-loss (such as in musical ear syndrome, the auditory version of Charles Bonnet syndrome), lateral temporal lobe epilepsy, [27] arteriovenous malformation, [28] stroke, lesion, abscess ...
Conditions causing complex visual hallucinations include schizophrenia, Charles Bonnet syndrome, migraine coma, treated idiopathic Parkinson's disease, epilepsy, narcolepsy-cataplexy syndrome, Lewy body dementia without treatment, peduncular hallucinosis, and hallucinogen-induced states. [12]
Oliver Wolf Sacks (9 July 1933 – 30 August 2015) was a British neurologist, naturalist, historian of science, and writer. [2] Born in London, Sacks received his medical degree in 1958 from The Queen's College, Oxford, before moving to the United States, where he spent most of his career.
Musical ear syndrome (MES) is a condition seen in people who have hearing loss and subsequently develop auditory hallucinations. "MES" has also been associated with musical hallucinations , which is a complex form of auditory hallucinations where an individual may experience music or sounds that are heard without an external source. [ 1 ]