A neurological condition whereby the patient's real personality is suddenly revealed by their simple loss of ability to accept views different to their own, Leave or Remain, to the point at which they suspend all respect for others and then enter into raised levels of judgement and hatred creating social division.

Signs include excess heat, hot sunken eyes, redness, finger poking, increased volume, pronounced veins, general appearance of shitty indignation and judgemental and personal posting on social media including memes that are borderline legal.

Brexititis can be highly contagious in closed circles such as pubs, market stalls, farms, small businesses, school staff rooms and hospitals and is more prevalent among people aged 30+. Bed rest is the only cure - hence young people tend never to catch it in the first place.

1. The default beliefs installed when you were a child.

2. An unexamined position you absorbed from your environment growing up.