When my acid reflux was at it's worse I was constantly clearing my throat and when it is acting up my voice cracks during singing especially high notes. I don't know if that is your problem but thought I'd mention :)
ive got acid reflux at the moment. on a good day i can reach the second to last octaive but now ive got acid reflux can still get there but not as easy and its crackly and i cant get into my head voice at all i just want to now if i will ever be able to use my head voice again after my acid reflux clears up
I have the same problem too. But mine started recently when i began working in an air-conditioned environment 8.5hrs daily. my throat does not hurt but my voice has changed and i cannot sing as well as i could before [esp. with the high notes] my throat is usually dry even when i drink my fluids. I NEED A REMEDY!!!