my 82 year old grandmother has undiagnosed Alzheimer’s. She won’t accept it and so hasn’t been diagnosed but has been very slowly progressing with it but I’m the past 6 months seems to be deteriorating more rapidly- struggling to converse, zoning out at times and repeating herself a lot more than usual. She lives alone but my mum is heavily involved in her care and it is becoming more and more. Recently she has been adamant she has ants in her bed. She has seen them running all over she says. She will not sleep in it and will only sleep in her uncomfortable chair. Are these hallucinations common in the elderly or is it an Alzheimer’s symptom?