The SLN  is responsible for sensory input to the vocal folds. Due to its variable nature, the progression of vocal fold paresis may fluctuate, so it may be characterized differently from one evaluation to the next. Fluctuating vocal fold paresis has been observed in neurodegenerative disorders like Guillain–Barré syndrome or myasthenia gravis.The posterior cricoarytenoid (PCA) is a muscle of the larynx that is responsible for pulling the vocal folds apart from one another. Vocal fold paresis describes the weakness of the PCA and an impairment to its functioning. Unilateral vocal fold paresis is the term used when there is damage to the RLN on one side of the body. In unilateral vocal fold paresis, there is a lack of nerve supply to one side of the vocal folds PCA muscle. This lack of nerve supply renders the arytenoid cartilage immobile. The RLN may be damaged during surgical procedures. The right RLN in particular, has a greater chance of being damaged during surgery due to its position in the neck. When both of the vocal folds PCA muscles lack a nerve supply, the term bilateral vocal fold paresis is used. With bilateral vocal fold paresis, a persons airway may become blocked as the muscles are unable to pull the vocal folds apart fully. Treatment
The treatment of vocal fold paralysis varies depending on its cause and main symptoms. For example, if laryngeal nerve paralysis is caused by a tumor, suitable therapy should be initiated.
Wera may refer to:

PeopleJulian Wera (1902–1975), Major League Baseball third baseman
Wera Engels, German actress
Wera Hobhouse, British politician
Wera Sæther (born 1945), Norwegian psychologist, poet, novelist, essayist, writer of books for youth and of documentary booksOtherWERA (Western Eastern Roadracing Association), motorcycle racing sanctioning body
WERA-LP, a low-power radio station (96.7 FM) licensed to serve Arlington, Virginia, United States
Wera River, river of Flores, Indonesia
Wera Tools, the popular name for German tool manufacturer, Wera Werk Hermann Werner GmbH & Co. KG, of Wuppertal, Germany
A defunct radio station in Plainfield, New Jersey on 1590 kilocycles per second