Hello there. For some reason, I have recently 'lost' my falsetto. I sing for a living(5/6 nights per week) and have never had this problem before. I'm not sure whether I 'over-did' it performing 3 gigs on New Year's Eve but since then, I've had this problem. The rest of my singing voice is fine, no hoarseness or soreness etc. Is this a common problem or am I just weird haha. Many thanks, in anticipation. (Chris from the UK)
Very hard to know what the cause is without looking. A virus can injure a nerve and prevent the muscles from tightening it raise your pitch. You can get a swelling from overuse that prevents tightening of the muscles all the way. If it persists, it would be worth having a look at by a laryngologist if you are a singer.