Hi my 88yr old father who's the sweetest man all my life with the Moderate LB Dementia he gets very tired all day sleeping, up during the night pacing opening blinds etc,this is all new to us but lately hes getting aroused and saying inappropriate things to my 87yr old mother.I did read about this with dementia and rang his doctor for medication.He's starting to not attend his hospital appointments saying they did me no good and giving out about them and they were very good to him I wondering do any other person with dementia be like this or is it him?Thanks Mary.
"Antidepressants have been used to treat patients with ISB owing to their effects on libido and treatment of paraphilias.7 Furthermore, they can be leveraged for dual indications such as irritability, depression, or apathy, which are common symptoms of dementia."
Source: https://www.cfp.ca/
It can progress to other unwanted sexual behaviors. Sorry you and your mom are having to deal with this.