Hallucinogen Persisting Perception Disorder (HPPD) is a rare, and therefore, poorly
understood condition linked to hallucinogenic drugs consumption. The prevalence of this …

Objective The aim of this narrative review is to explore the relationship between visual snow
syndrome (VSS), migraine, and a group of other perceptual disorders. Background VSS is …

Now in a thoroughly revised and updated Sixth Edition, Localization in Clinical Neurology is
cornerstone in clinical neurology. Designed to aid clinicians in their quest to locate the …

Objective To validate the current criteria of visual snow and to describe its common
phenotype using a substantial clinical database. Methods We performed a web-based …

Background A detailed evaluation of migraine aura symptoms is crucial for classification
issues and pathophysiological discussion. Few studies have focused on the detailed clinical …

Patients with visual snow syndrome suffer from a continuous pan-field visual disturbance,
additional visual symptoms, tinnitus, and non-perceptional symptoms. The pathophysiology …

Background and purpose Visual snow syndrome is a recently described condition of
unknown prevalence. We investigated the prevalence in a representative population sample …

In this paper we review the visual snow (VS) characteristics of a case cohort of 32 patients.
History of symptoms and associated co-morbidities, ophthalmic examination, previous …

Here we investigate brain functional connectivity in patients with visual snow syndrome
(VSS). Our main objective was to understand more about the underlying pathophysiology of …

Aims To gather information on useful medications to treat visual snow syndrome (VSS) as
well as to validate an instrument to assess its clinical severity and the course of the disorder …