Does anyone experience hoarseness?

I don't, but know this can be a problem with Rheumatoid Arthritis. Some sort of inflammation in there. Sorry I don't know more, at least I can tell you it is a real thing associated with an autoimmune disease.

Also, thinking it can be part of Sjogren's, which can often be secondary to another autoimmune disorder.

I do but only briefly. I will be chatting and then my voice will go all funny and i have to clear it. It happened this morning.

Aren’t mucosal changes common when taking MTX? My throat changed the week I started taking it. Sjogren’s has been in the back of my mind too. Are you on MTX?