My oh , has mixed dementia and really has some disgusting outbursts towards his stepson, any slight thing can trigger him off he seems to look to start trouble on him , is this normal ? I must say they have never had a great relationship but this is terrible my nerves are in tatters.W I automatically protect him as he’s my son, please tell me it doesn’t worse as my son just doesn’t want to come home from uni now .To look and talk to my husband you would never know he had dementia.