Mom is making a constant groan, hum, growl, sigh noise. It gets very loud at night and it drives us nuts. It never stops except when she sleeps. Help!
I can understand your frustration. Here are a few questions and considerations.
Is it really constant? Usually I find that this behavior will stop under certain situations, e.g. meal time, outings, singing or listening to music, enjoying ice cream cones, etc. If it does stop during those times try to program more of these opportunities, e.g. having music playing in her room.
Does it stop when you are talking with her, giving her a hand rub or engaging her? If so, try to expand her activities to fight boredom (which can lead to this behavior).
The behavior you describe could be a sign of pain. Check for ill-fitting dentures or other pain issues. One geriatrician I know even tries a round of extra strength Tylenol to see if that can impact the behavior (check with your doctor since I can’t give medical advice!)
Behavior like that of your mother can indicate an advance of her Alzheimer’s disease or other dementia. The brain is being damaged and in these situations it is very difficult to change her behavior. You and your family thus may need to work on your own reaction to her behavior, trying to reinforce your sense of humor, hum with her or put on a good pair of ear plugs at night!