A sample of 755 psychiatric emergencies taken in charge in the emergency service of the St-Luc Hospital, Brussels, was divided into two groups: patients without psychiatric background (498) and patients having received previous psychiatric care (238). A background of psychiatric follow-up strongly influence the taking on and therapeutic decisions to be made by psychiatrists: its absence protects the patient and is seen as the guaranty of a good investment from the therapist while the existence of previous psychiatric treatment rather leads to hospital in lieu of crisis intervention, even when the crisis mechanisms are not significantly different in both samples.