Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Call emergency services for vertigo with new weakness, numbness, facial drooping, speech or vision changes, severe loss of coordination, confusion, fainting, chest pain, or a sudden severe headache.
Do not drive yourself for emergency evaluation.
Seek prompt care if episodes become prolonged, vomiting makes it difficult to drink, you develop sudden hearing changes, or you fall and may have been injured.
A follow-up assessment is useful if symptoms continue after treatment, return frequently, or no longer follow the usual brief positional pattern.
The clinician may repeat positional testing, treat a different canal, or look for another cause of dizziness.
Arrange routine follow-up if you still have mild imbalance, are limiting activity because of fear of falling, or are unsure whether a home maneuver is being performed correctly.
A vestibular physical therapist, audiologist, ear specialist, or neurologist may be involved when symptoms are persistent or the diagnosis is unclear.
Every sign above is quoted from the sofidex article on Benign positional vertigo. If you are not sure, err upward — it is always reasonable to be checked.