neurosis neurosis /nʊˈroʊsəs/

noun

1. () A mental or personality disturbance not attributable to any known neurological or organic dysfunction  ( neuroticism , psychoneurosis , neurosis )
   a mental or personality disturbance not attributable to any known neurological or organic dysfunction
     Her obsessive cleaning habits were a manifestation of her neurosis.
   Her obsessive cleaning habits were a manifestation of her neurosis.