A severe or incapacitating emotional disorder, especially when occurring suddenly and marked by depression. Not in scientific use.
The sudden onset of a psychotic or neurotic disorder that temporarily impairs a person's ability to function normally, typically precipitated by some crisis or intense, unrelieved stress.
A collapse in mental health, such as the onset of a severe mood disorder, that precludes normal functioning and may require hospitalization. Not in clinical use.
An attack of a psychological disorder such as depression
that it prevents a person from continuing to function normally.