The target population of this study consists of individuals aged 18 years and older who can read and understand Turkish and experience dizziness triggered by visual or environmental stimuli. Written informed consent will be obtained from all participants. Sociodemographic and clinical characteristics, including age, sex, occupation, smoking and alcohol use, comorbidities, medical history, medications, daily activity level, onset and type of the condition, fall history, and sensitivity to heights, darkness, and crowded environments, will be recorded using a researcher-designed form. Based on the "item number × 10" rule, at least 190 participants will be included for the 19-item Situational Vertigo Questionnaire (SVQ). Participants will complete the SVQ, Dizziness Handicap Inventory (DHI), and Vertigo Symptom Scale (VSS), and rate satisfaction using a Visual Analog Scale. Test-retest reliability will be assessed in at least 20% of participants after 7-14 days.

The Turkish adaptation of the Situational Vertigo Questionnaire (SVQ) will follow internationally accepted cross-cultural adaptation guidelines using a forward-backward translation method. Two independent bilingual translators will translate the original English version into Turkish, producing two versions that will be compared and synthesized into a preliminary Turkish form. This version will then be back-translated into English by two native English speakers blinded to the original scale. A committee of translators and experts will review all versions to ensure conceptual and linguistic equivalence and create a pre-final Turkish version. The pre-final version will be pilot tested with 20 participants to assess clarity and comprehension. Items reported as unclear will be revised. Finally, the scale will be administered to a larger sample for psychometric evaluation of validity and reliability.

The Situational Vertigo Questionnaire (SVQ) is a 19-item self-report scale designed to assess visual vertigo associated with increased visual dependence and insufficient vestibular compensation. Visual vertigo refers to dizziness triggered or worsened in visually complex or disorienting environments such as supermarkets, driving, or moving visual scenes. The condition is thought to arise from difficulties resolving conflicts between visual, vestibular, and proprioceptive inputs. The SVQ asks individuals to rate the severity of dizziness in situations involving visual motion or visual-vestibular conflict. Each item is scored from 0 (none) to 4 (severe), and participants may select "never experienced" if applicable. The total score is calculated based on the average item score, adjusted for items marked as not experienced, with higher scores indicating more severe symptoms.

The scale is used to evaluate the physical, emotional, and functional effects of vestibular disorders. Items 1, 4, 8, 11, 13, 17, and 25 assess physical disability; items 2, 9, 10, 15, 18, 20, 21, 22, and 23 assess emotional disability; and items 3, 5, 6, 7, 12, 14, 16, 19, and 24 assess functional disability. Each item is scored as "yes" (4 points), "no" (0 points), or "sometimes" (2 points). Cut-off values of 28 points for physical disability and 36 points for functional and emotional disability are used. Higher scores indicate more severe dizziness-related impairment.

Participant satisfaction and enjoyment will be assessed using a 10-cm Visual Analog Scale (VAS). The scale consists of a 10 cm (100 mm) horizontal or vertical line with endpoints representing opposite extremes. In this study, one end indicates "very good satisfaction" and the other indicates "very poor satisfaction (0)." Participants mark the point that best represents their perception. Although commonly used to measure pain intensity, the VAS is also widely applied to evaluate various subjective outcomes. In this study, it will be used to assess participants' level of satisfaction.