neurosis
Concise Oxford English Dictionary © 2008 Oxford University Press:
neurosis /ˌnjʊəˈrəʊsɪs/
▶noun (pl. neuroses /-siːz/) Medicine a relatively mild mental illness not caused by organic disease, involving depression, anxiety, obsessive behaviour, etc. but not a radical loss of touch with reality.
'neurosis' also found in these Oxford entries:
