What is the commonest cause of vertigo?

Benign paroxysmal positional vertigo

What is the common presentation of Benign paroxysmal positional vertigo?

sudden onset of dizziness and vertigo triggered by changes in head position

What are the main clinical features of Benign paroxysmal positional vertigo?

• vertigo triggered by change in head position
• may be associated with nausea
• each episode typically lasts 10-20 seconds

How is Benign paroxysmal positional vertigo diagnosed?

Dix-Hallpike manoeuvre

What is the management of Benign paroxysmal positional vertigo?

Epley manoeuvre (successful in around 80% of cases)

What is the prognosis of Benign paroxysmal positional vertigo?

recurrence of symptoms after 3–5 years of treatment