Difficulty in producing high pitched sounds (No visual vocal chord problem apparent)

Suddenly, it is difficult to let out high-pitched sounds … though there is no visible problem after a diagnosis with a otolaryngologist.
What happened that could have caused this? Many singers struggle with this issue.
If no problem with the vocal chord is apparent, after a diagnosis, the cricothyroid muscle is most likely the cause of the issue – which is a problem surrounding the production of tone and pitch.
I will share some similar cases I was involved in, to support this claim.

Case1: 20’s Male Rock singer;
When he was practicing, shouting, he could not let out any notes higher than C5.
The cricothyroid muscle was overworked and showed a chronic problem surrounding the lactate metabolism, which diminished the kinetism.
Solution … The cricothyroid muscle improved by mobilization and stretching.

Case2: 30’s Female singer;
She felt it was difficult to let out notes higher than F5.
When I examined her, I saw signs of amyotrophia on the superior laryngeal artery. This was due to lack of blood flow.
Solution … I opened the hyoid bone and thyroid cartilage, which immediately showed signs of improvement.

Case3: 30’s Male Pop singer;
He expressed singing with uncomfortable feeling, and also difficulty singing with his high-pitched natural voice. (No problems with falsetto) I found a slightly ruptured muscle on the side of cricothyroid muscle, by using precise palpation and a laryngoscope.
Solution … he recovered by taping the muscle, and also physiotherapy.

These problems were not only caused by the cricothyroid muscle, but also the inner muscles. Which in turn, was causing thinning/hardening to the muscles of the vocal chord. So, please have an appropriate examination and regain your great high-pitched voices through proper medical treatment.

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The cricothyroid muscle is roughly the size of a human fingernail. There are 4 pieces, which are in the oblique part(2 pcs) and the pendent part. Even though these are very small muscles, they play a very important role in creating consistent high register musical pitches and tones.

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