Vitamin D Deficiency and BPPV: Is Low Vitamin D Linked to Vertigo Recurrence?
Official title: Association Between Benign Paroxysmal Positional Vertigo and Vitamin D Deficiency ; Sohag University Hospital Experience.
Run by Sohag University · NCT07491965 · Data updated 2026-11-12
This observational study tests whether adults with BPPV have different vitamin D levels compared with adults without dizziness at a hospital in Sohag, Egypt.
Quick facts
| Study type | Observational |
|---|---|
| Sex | All |
| Enrollment | 160 (estimated) |
| Sponsor | Sohag University Academic / other |
| Locations | 1 site (Sohag) |
| Status | Recruiting |
| Started | April 1, 2026 |
| Main results expected | September 1, 2026 |
| Study ends | October 1, 2026 |
| Registry record updated | June 18, 2026 |
| Trial ID | NCT07491965 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults diagnosed with idiopathic BPPV based on a positive Dix-Hallpike maneuver, compared with adults without vertigo or BPPV attending ENT clinics.
✕Probably not a fit
Individuals with secondary vertigo or conditions affecting vitamin D metabolism may not experience benefit from the study findings for BPPV risk guidance.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
Benign paroxysmal positional vertigo (BPPV) is a common cause of vertigo related to head position. This study investigates whether vitamin D deficiency is associated with BPPV by comparing adults with idiopathic BPPV to adults without vertigo attending ENT clinics. It uses the Dix-Hallpike maneuver for diagnosis in cases and controls, and examines vitamin D status as a potential metabolic factor. By focusing on a tertiary-care center in Upper Egypt, the study aims to clarify whether vitamin D metabolism may influence otoconia maintenance and BPPV risk. The findings could inform future preventive or therapeutic strategies if a link is identified.
Why it matters
Potential benefit: If a link is found, it could lead to new prevention or management approaches for BPPV, such as vitamin D screening or supplementation in at-risk individuals.
How similar studies have gone: Previous research has suggested associations between vitamin D deficiency and BPPV, but the strength and consistency of evidence vary across populations.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * • Cases: Adults with a confirmed diagnosis of idiopathic BPPV based on positive Dix-Hallpike maneuver (nystagmus and vertigo lasting \<1 minute). * Controls: Adults attending ENT clinic without history of vertigo or BPPV, confirmed by negative Dix-Hallpike test. Exclusion Criteria: * Known causes of secondary vertigo (e.g., Meniere's disease, vestibular neuritis, central vertigo). * Conditions affecting vitamin D metabolism (e.g., chronic kidney disease, malabsorption syndromes, hyperparathyroidism). * Use of medications interfering with vitamin D levels (e.g., anticonvulsants, glucocorticoids) in the past 3 months. * Pregnancy or lactation. * Inability to provide consent.
Where it's running
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Sohag University Hospital
Sohag, Egypt Recruiting
Study contacts
- Study coordinator: Ahmed Usama
- Email: ahmedurashad2101@gmail.com
- Phone: 2001012888469
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Epley vs. Semont-plus maneuver for posterior canal BPPV
This trial tests whether the Epley maneuver or the Semont-plus maneuver more effectively treat posterior canal BPPV in adults.
-
Epley maneuver for treating dizziness in the emergency department
This trial tests whether doing the Epley maneuver, versus a sham maneuver, helps adults with posterior canal BPPV who come to the emergency department feel less dizzy.
-
Investigating BPPV in Elderly Patients in Primary Care
This study is testing if simple balance tests for dizziness in older adults can help find hidden cases of BPPV and improve their quality of life while reducing their fall risk.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.