Brain cancer fact sheet: Inappropriate social or sexual behaviour.
Inappropriate social behaviour is acting or talking in an awkward, embarrassing or socially unacceptable way. Generally this behaviour was not present before the brain tumour or if it was, it has worsened.
Inappropriate sexual behaviour is acting in a way that does not meet with community standards of behaviour.
A survey of people with a brain tumour found that 37% showed inappropriate sexual and social behaviour such as laughing too easily or talking too much about sex.
Carers of people with a brain tumour said that 12% of their relatives showed inappropriate social behaviour that was different to the way they acted before the brain tumour.