Since both MRI and Doppler are essentially normal for acute causes, your persistent dizziness is likely from:
-Inner ear/vestibular issue (very common: BPPV, vestibular neuritis, Ménière’s disease).
-Cervical spine problems (cervical spondylosis, posture-related).
-Migraine-associated vertigo.
-Systemic causes: anemia,
thyroid issues,
vitamin B12/D deficiency, low blood pressure, dehydration.
-Anxiety/stress can also amplify dizziness.
Next Steps
Blood tests: CBC,
Thyroid function,
Vitamin B12,
Vitamin D, blood
sugar.
Cervical spine xray
Continue Vertin (betahistine) as advised by your doctor; sometimes a short course of vestibular rehab physiotherapy is also very helpful.
Consult with me after reports arrive.
Health Tips
Red flag symptoms (urgent doctor visit if you develop): sudden severe headache, new weakness, slurred speech, double vision, vomiting.