Which of the following are types of vertigo?

The correct classification of vertigo is indeed characterized by the terms transient and persistent. Transient vertigo refers to episodes that are brief and often resolve on their own, fluctuating in intensity and frequency. This can be commonly seen in conditions like benign paroxysmal positional vertigo (BPPV), where symptoms arise suddenly but typically do not last long and can occur more sporadically.

On the other hand, persistent vertigo indicates a longer-lasting condition, where symptoms are more consistent and can significantly impact a person's daily life. This kind of vertigo may be associated with more chronic conditions such as vestibular migraines or Meniere's disease.

The other options present variations of conditions but do not reflect the specific nature of vertigo as directly. Continuous and episodic can describe the duration but not the classification that impacts the understanding of treatment options. Mild and severe suggest the intensity of symptoms rather than their duration or persistence. Acute and chronic are terms more often used to describe conditions or illnesses in a general sense, rather than providing a clear categorization for the experience of vertigo specifically. Therefore, transient and persistent is the best way to differentiate the types of vertigo based on their duration and impact on daily life.