Compulsive swearing is called coprolalia, and it is associated with neurological conditions such as Tourette syndrome, dementia, and epilepsy. The ability to use profanity can remain intact even when neurological trauma causes aphasia. - Wikipedia. Like leader, like followers. | Al Akhigbe

The recent BAFTA awards and the shouting of a racial slur by a Tourette campaigner as the show was being broadcast have put a focus on the syndrome and the involuntary outbursts and tics that can be associated with it.

Signs and symptoms of depression - Beyond Blue