How bad case of severe mania?

Can be really bad: In severe mania, people can be very agitated and impulsive -- getting themselves into big trouble sexually, financially, or with careers, school, relationships, etc. They can be psychotic, hallucinating and having delusions. They may not sleep for days. They can have mixed states of mania with depression, and end up committing suicide. Such a person needs emergency psychiatric help.

Can be a big problem: Mani often feels good to people experiencing it, but its effects, left untreated, can be devastating. So a case of severe mania is something that needs urgent care.

Mania: Abnormally elevated, irritable or expansive mood. It is derived from the greek words meaning madness or frenzy. It is usually accompanied by grandiosity, pressured speech, inflated self-esteem, flight of ideas, hypertalkativeness, reduced need for sleep, racing thoughts & over-indulgence in risky behaviors.

Mania: Untreated mania can be life-threatening and even have psychotic features. It can lead to impulsive decisions, poor judgement, and the patient putting themselves and others in harm's way.