My father was diagnosed with vascular dementia 3 weeks before Christmas, as you can tell it was a shock for all of my family as he is only 67 years old. Anyway we do not know how long he has been suffering from the dementia but recently he has started to make unwanted sexual advances towards my mother and becoming very angry when refused. this is very embarrassing and i am sorry to be so forward, but i am desperately seeking advice on how to handle this senstively, as my mother is at her wits end. she is scared of him at the moment and he doesn't understand what he is doing wrong. Please can someone help by giving me advice.