Stacey Betts, a mother of five, filed the suit on Wednesday in U.S. District Court. The suit states that Betts was injured after Bieber climbed into a heart-shaped gondola and was pulled over the crowd.
The lawsuit alleges that Bieber, during a 2010 concert in Portland, worked up the crowd into a "frenzy of screams" by waving his arms, and the sound exceeded safe decibel levels.
The gondola "acted as a sound conductor, creating a sound blast that permanently damaged both my ears," Betts wrote in the lawsuit.
Betts is seeking money for medical expenses, pain and suffering and loss of quality of life. The lawsuit states Betts has been seeing ear specialists because of hearing loss, severe ringing in the ears and sensitivity to sound.
Supporting court documents show Betts has not been employed since 2005 and has received disability or workers compensation payments for the past year. They also show she has a spouse or significant other who works at a high school.
The Associated Press contributed to this report.
