Neurosis
Pronunciation: /ˌnjʊəˈrəʊsɪs/
noun (plural neuroses ˌnjʊəˈrəʊsiːz)
1 - A relatively mild mental illness that is not caused by organic disease, involving symptoms of stress (depression, anxiety, obsessive behaviour, hypochondria) but not a radical loss of touch with reality: Freud’s two-stage account of neurosis [count noun]: psychoses, neuroses, and personality disorders Compare with psychosis.
1.1 - (In non-technical use) excessive and irrational anxiety or obsession: 'too much neurosis about a child’s progress is unproductive'.