Vocal cord relaxation may be related to complete paralysis of the recurrent laryngeal nerve, paralysis of the superior laryngeal nerve, and aging of the vocal cords, etc. According to the cause of the disease and the extent of the disease, general treatment, medication, and surgical treatment should be chosen in order to restore the shape and function of the vocal cords.
1. Complete paralysis of the recurrent laryngeal nerve: it is caused by tumor compression, viral infection, nerve injury, etc. In indirect laryngoscopy, the bilateral vocal cords are fixed in the paracentral position, with flaccid edges, which are not able to be closed or adducted. According to the cause of the disease, the main branch of the neck or the anterior root of the laryngeal nerve anastomosis, vocal cord injection and filling, arytenoid cartilage internal transfer, thyroid chondroplasty type I and other treatments can be chosen.
2. Superior laryngeal nerve palsy: the etiology is similar to that of recurrent laryngeal nerve palsy, which is manifested as the loss of tension of the vocal cords and the presentation of vocal cord relaxation. If it is caused by the compression of neck tumor, resection of the tumor can be treated. If it is caused by peripheral neuritis, it can be treated by giving large amounts of vitamin B₁ orally or by injection, or by applying prothionamide.
For conservative treatment is ineffective, as well as trauma caused by the superior laryngeal nerve palsy, need to perform surgical treatment, such as thyroglossal muscle cricothyroid muscle suture.
3. Aging of the vocal folds: with age, the vocal folds become loose and less elastic. This factor causes the disease, most can not be reversed, can try to give systemic or local neurotrophic drugs such as vitamin B ₁ ₂, furothiamine, etc., to improve the microcirculation of drugs.
All of the above drugs should be used under the guidance of a doctor, when the examination found that the voice relaxation, there are other possibilities, such as trauma caused by, need to follow the doctor’s instructions for further examination, to clarify the cause and extent of the disease, and then follow the doctor’s instructions to standardize the treatment.