Testing the Epley Maneuver for Treating Dizziness in the Emergency Department

Inclusion Criteria * Age: above 18 years old * Patients presenting to the ED with symptoms of BPPV (single or recurrent episodes of vertigo lasting up to 2 minutes) and a positive DHT (episode of vertigo associated with torsional upbeating nystagmus) indicating a posterior semicircular canal BPPV. * Patients who are able to understand and provide a signed informed consent to participate in the study Exclusion Criteria * Severe cervical diseases (e.g., soft tissue disorders, cervical spondylosis, prolapsed intervertebral disks and severe rheumatoid arthritis with cervical instability …) * Unstable cardiovascular diseases (e.g., hemodynamically unstable, decompensated heart failure, acute myocardial infarction, decompensated valvular diseases, severe arrhythmias …) * Suspected vertebrobasilar diseases (e.g., cerebellar signs, vision changes, numbness or tingling in the extremities, slurred speech, changes in mental status, confusion …) * History of high-grade carotid stenosis * Recent (\<24 hours) intake of aminoglycosides, chemotherapeutic agents, cyclophosphamide, loop diuretics, or quinines * Patients with peripheral causes of vertigo other than BPPV (such as Meniere's disease or vestibular neuritis) * Patients with central causes of vertigo (vestibular migraine, Arnold Chiari malformation, history of CNS tumor(s), multiple sclerosis) * Patients with focal deficits on neurological exam * Patients with an episode of vertigo lasting more than 2 minutes * Patients with a negative DHT * Patients with pure horizontal or vertical nystagmus * Patients with lateral and anterior semicircular canals BPPV * Participants refusing to undergo Epley maneuver * Pregnancy beyond the 24th week of gestation