schizophrenia
/ˌskɪtsəˈfriːniə, ˌskɪdz-, -oʊ-, -ˈfrɛniə/
noun
a long-term mental disorder of a type involving a breakdown between thought, emotion, and behaviour leading to faulty perception, innapropriate actions and feelings, withdrawal from reality and personal relationships into fantasy and delusion, and a sense of mental fragmentation.