A term describing a person who has totally lost their grip on reality. Such people are mainly from the right wing of the political spectrum, and are often politicians and religious extremists.
Person who gives nothing but is extremely demanding at the same time. While at the same time knows little but swears to know everything. While at the same time be poor but viewing everyone as a peasant or subcategory. The cumulation of disconnected ideologies earn the term nutcase, while "he/she is nuts" would describe one disconnected ideology.