Vocal overuse can be caused by many things, including infection and psychological trauma, and voice-laden professions such as teaching are particularly affected.
The overarching term for voice disorders or problems is ‘dysphonia’ and losing your voice can be devastating. It can have a huge effect on your quality of life, including economic, social and emotional tolls, but most people don’t seek treatment as it is a highly under-diagnosed and under-treated disorder.
Listen to the audio segment on the ABC for more information: https://radio.abc.net.au/programitem/pgLGK8Lam6?play=true
If you have a voice disorder and need support, the Australian Dysphonia Network is worth connecting with.