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This article describes the procedure and its rationale, and reports the results in 30 patients who exhibited the classic nystagmus of BPPV with Hallpike maneuvers. CRP obtained timely resolution of the nystagmus and positional vertigo in 100%. Of these, 10% continued to have atypical symptoms, suggesting concomitant pathology; 30% experienced one or more recurrences, but responded well to retreatment with CRP. These results also support an alternative theory that the densities that impart gravity\u2010sensitivity to a semicircular canal in BPPV are free in the canal, rather than attached to the cupula. CRP offers significant advantages over invasive and other noninvasive treatment modalities in current use.<\/jats:p>","DOI":"10.1177\/019459989210700310","type":"journal-article","created":{"date-parts":[[2017,1,27]],"date-time":"2017-01-27T00:04:10Z","timestamp":1485475450000},"page":"399-404","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":945,"title":["The Canalith Repositioning Procedure: For Treatment of Benign Paroxysmal Positional Vertigo"],"prefix":"10.1002","volume":"107","author":[{"given":"John M.","family":"Epley","sequence":"first","affiliation":[{"name":"Portland Otologic Clinic Portland Oregon"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2016,4,22]]},"reference":[{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.3109\/00016482009123103"},{"key":"e_1_2_1_3_1","first-page":"341","article-title":"The pathology, symptomatology, and diagnosis of certain common disorders of the vestibular system","volume":"54","author":"Dix R","year":"1952","journal-title":"Proc R Soc Med"},{"key":"e_1_2_1_4_1","first-page":"319","article-title":"Positional vertigo: Clinical and experimental observations","volume":"66","author":"Schuknecht HF","year":"1962","journal-title":"Trans Am Acad Ophthalmol Otolaryngol"},{"key":"e_1_2_1_5_1","doi-asserted-by":"publisher","DOI":"10.1177\/000348947408300504"},{"key":"e_1_2_1_6_1","first-page":"472","article-title":"Lorazepam and diazepam in the treatment of benign paroxysmal vertigo","volume":"9","author":"McClure JA","year":"1980","journal-title":"J Otolaryngol"},{"key":"e_1_2_1_7_1","first-page":"106","article-title":"The physiologic basis for head exercises","volume":"30","author":"Cawthome T","year":"1944","journal-title":"J Chart Soc Physiother"},{"key":"e_1_2_1_8_1","doi-asserted-by":"publisher","DOI":"10.1001\/archotol.1980.00790320036009"},{"key":"e_1_2_1_9_1","first-page":"21","volume-title":"Les vertige d'origine peripherique et centrale","author":"Toupet M","year":"1985"},{"key":"e_1_2_1_10_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF00468639"},{"key":"e_1_2_1_11_1","doi-asserted-by":"publisher","DOI":"10.1159\/000416126"},{"key":"e_1_2_1_12_1","first-page":"434","article-title":"Cupulolithiasis","volume":"20","author":"Schuknecht HF","year":"1973","journal-title":"Adv Otorhinolaryngol"},{"key":"e_1_2_1_13_1","doi-asserted-by":"publisher","DOI":"10.1152\/ajplegacy.1965.208.6.1065"},{"key":"e_1_2_1_14_1","doi-asserted-by":"publisher","DOI":"10.1038\/247404a0"},{"key":"e_1_2_1_15_1","first-page":"151","article-title":"The mechanics of benign paroxysmal vertigo","volume":"8","author":"Hall SF","year":"1979","journal-title":"J Otolaryngol"},{"key":"e_1_2_1_16_1","doi-asserted-by":"publisher","DOI":"10.1177\/019459988008800514"},{"key":"e_1_2_1_17_1","unstructured":"PamesLS McClureJA.Free\u2010floating endolymph particles: A new operative finding during posterior canal occlusion. 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