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My husband's constant "mumbling/muttering" and other odd noises he makes throughout the day gets on my nerves as well, but what can we do? It's mostly a problem for me when it's time for bed. When I ask him to settle down and whisper he says that he's not doing anything and just keeps going. He has been taking lexapro pretty since the beginning of his diagnosis 3 years ago for his anxiety and depression, and I don't feel like it helps anymore. Not only has he been making these "new" sounds in the past few months, he's been having "soft harmless" hallucinations, so the dr. has now put him on Seroquel, which should help, especially at bedtime since it seems to take him hours, at times, to fall asleep. It HAS been helping for the most part, but there are still nights where it isn't. I guess it's just one of those things that I will have to adjust to because he can't help it. Ohhh how i hate this disease!!!! We have a follow up in another month to see how it's working...so who knows, maybe they'll up his dose a little since it seems to be helping but just not on a consistent basis at this low dose. I too try to ignore these quirks and ticks that he has developed, but it's hard to when Im not not getting good sleep and we all know that as caregivers, we need to take care of ourselves so we can be the best for our loved ones.
Hugs, strength and peace to you