<unk>  is the psychiatric term for<unk>  which can be triggered by an extremely stressful event in the life of a patient.  This 'stressful life event' can take many forms, including (but not limited to) the death of a loved one, professional loss such as unexpected redundancy or otherwise becoming unemployed, or serious adverse changes in the patient's personal life, such as the breakdown of their family through divorce, etc.
It must be stressed that this is by no means an exhaustive list of stressful life events, because the events which trigger<unk>  tend, due to the individualistic nature of human psychology, to be extremely personalized.
The condition usually spontaneously resolves itself within two weeks, and the main goal of treatment is to prevent the patient from harming either themself or others.
Brief reactive psychosis
Brief psychotic disorder
Disorganized schizophrenia
Substance or medication induced psychotic disorder
Bipolar disorder mixed state
Paranoid Schizophrenia
Schizoaffective disorder
Atypical depression