Visual release hallucinations
Visual Release Hallucinations
Visual release hallucinations, also known as Charles Bonnet Syndrome (pronounced sharl bon-ay), are complex visual hallucinations in individuals with significant visual loss. The term was first coined by the Swiss naturalist George de Morsier in 1967, named after the Swiss philosopher Charles Bonnet, who first described the condition in his grandfather in the 18th century.
Definition
Visual release hallucinations are a type of hallucination characterized by complex and recurrent visual perceptions that occur in the absence of external stimuli, typically in individuals with significant visual loss. These hallucinations are often vivid, well-formed, and can range from simple patterns to detailed images of people, animals, or scenes.
Etiology
The exact cause of visual release hallucinations is unknown. However, it is believed to be related to a release phenomenon following visual deprivation, hence the term "visual release." This is similar to the phantom limb phenomenon, where amputees experience sensations from a limb that is no longer present.
Symptoms
The hallucinations associated with visual release hallucinations are typically non-threatening and can range from simple shapes and colors to complex scenes and images. These hallucinations are purely visual and do not involve the other senses. They are often described as being more like a silent movie than a hallucination.
Treatment
There is currently no specific treatment for visual release hallucinations. However, reassurance and explanation about the benign nature of the condition can often help to alleviate distress. In some cases, treatment of the underlying visual loss may help to reduce the frequency or severity of the hallucinations.
See Also
External links
- Medical encyclopedia article on Visual release hallucinations
- Wikipedia's article - Visual release hallucinations
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