Visual snow
Visual Snow
Visual snow (/ˈvɪʒuəl snoʊ/), also known as visual static, is a proposed condition in which people see white or black dots in parts or the whole of their visual fields. The problem is typically always present and can last years.
Etymology
The term "visual snow" was coined by a group of researchers led by Dr. Peter Goadsby in 2014. The term is derived from the visual perception of the condition, which is similar to television-like static or snow.
Symptoms
The primary symptom of visual snow is the constant presence of white or black dots in the visual field, similar to the noise of an analog television (hence the name "visual snow"). Other symptoms may include floaters, problems with night vision, and photosensitivity.
Causes
The exact cause of visual snow is unknown. Some researchers believe it may be related to migraines or hallucinogen persisting perception disorder (HPPD). However, more research is needed to confirm these theories.
Diagnosis
Diagnosis of visual snow is primarily based on the patient's description of their visual disturbances. There is currently no specific test to confirm the diagnosis of visual snow.
Treatment
There is currently no cure for visual snow. Treatment is focused on managing symptoms and may include medications such as lamotrigine or acetazolamide.
See Also
References
External links
- Medical encyclopedia article on Visual snow
- Wikipedia's article - Visual snow
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