BPPV is not a serious medical condition, but may present serious risks of injury through falling or other spatial disorientation-induced accidents. When untreated, it might resolve in days to months; however, it may recur in some people. One can needlessly suffer from BPPV for years despite there being a simple an very effective cure. Short-term self-resolution of BPPV is unlikely because the effective cure maneuvers induce strong vertigo which the patient will naturally resist and not accidentally perform. The first medical description of the condition occurred in 1921 by Róbert Bárány. Approximately 2.4% of people are affected at some point in time. Among those who live until their 80s, 10% have been affected. BPPV affects females twice as often as males. Onset is typically in people between the ages of 50 and 70.
Abrasion may refer to:

Abrasion (dental), the loss of tooth structure by mechanical forces from a foreign element
Abrasion (medical), a wound consisting of superficial damage to the skin
Abrasion (mechanical), the process of scuffing, scratching, wearing down, marring, or rubbing away
Abrasion (geology), mechanical scraping of a surface by friction between moving particles

See also
Abrasion coast, a coastline that is characterised by the removal (abrasion) of material
Abrasives