Related Experiment Video
Updated: Oct 20, 2025
10:39
3D-Neuronavigation In Vivo Through a Patient's Brain During a Spontaneous Migraine Headache
Published on: June 2, 2014
18.4K
Visual snow syndrome and its relationship with migraine
O Barrachina-Esteve1, I Hidalgo-Torrico2, C Acero3
1Servicio de Neurología, Parc Taulí Hospital Universitari, Institut d'Investigació i Innovació Parc Taulí I3PT, Universitat Autònoma de Barcelona, Sabadell, España.
Neurologia
|September 15, 2021
Summary
Visual snow syndrome (VSS) causes constant visual static. This central nervous system disorder is linked to migraine, with lamotrigine showing limited efficacy in severe cases.
Area of Science:
- Neuroscience
- Ophthalmology
Background:
- Visual snow syndrome (VSS) is a neurological condition characterized by persistent visual static.
- It affects individuals across all age groups, with a higher prevalence in younger populations.
Purpose of the Study:
- To summarize current understanding of VSS, including diagnostic criteria and pathophysiology.
- To explore the relationship between VSS and migraine.
Main Methods:
- Review of diagnostic criteria for VSS.
- Discussion of postulated pathophysiological mechanisms, including cortical hyperexcitability.
- Analysis of the comorbidity and symptom severity in patients with both VSS and migraine.
Main Results:
- Diagnostic criteria for VSS involve visual snow plus other persistent visual phenomena.
- Migraine is highly prevalent in VSS patients, exacerbating symptoms.
- Lamotrigine is the most effective treatment, but only for selected severe cases.
Conclusions:
- VSS is underdiagnosed but gaining research attention, with established diagnostic criteria.
- VSS and migraine share overlapping symptoms and likely common pathophysiological pathways.
- Further research is needed to understand VSS pathophysiology and develop effective treatments.
Keywords:
Aura visualFotofobiaMigraineMigrañaNieve visualPalinopsiaPhotophobiaSíndrome de nieve visualVisual auraVisual snowVisual snow syndromeMore Related Videos
08:57Measuring the Influence of Magnetic Vestibular Stimulation on Nystagmus, Self-Motion Perception, and Cognitive Performance in a 7T MRT
Published on: March 3, 2023
2.1K
06:30Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm
Published on: April 28, 2020
6.0K
Related Concept Videos
01:15Equilibrium and Balance
5.2K
The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
5.2K
01:12Visual Agnosia
475
Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round...
475
01:25Glaucoma: Overview
988
Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
988
01:24Prosopagnosia
395
Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...
395
01:26Visual System
1.0K
Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...
Once through the pupil, the light passes through the lens, a...
1.0K
01:24Vision
56.7K
Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
56.7K