I can only pass on what i am learning as I go. My wife is doing this and I have discovered that she is not drinking as much as she should. This apparently leads to dehydration which in turn causes hallucinations and when she is in a hallucinatory state I can tell that she thinks there are other people in the room. That is when she starts whispering to me. May not be the case but it pays to probe possibilities.My OH, who has Vascular Dementia and Alzheimers is starting to use words less and less to communicate. He seems to whisper rather than speak. I asked him why and he holds his throat.
my husband is the same, he either wispers of doesn t say anything even when i ask him, its so tireingSome people with dementia develop a symptom, known as Aphasia, that can make use/understanding of language difficult. Difficulty with swallow can follow this. My wife has these issues and is awaiting an appointment with the local SALT team.
Your OH may also be indicating pain. Overall I think it may be an idea to run this past the GP.