What are signs of possible acute mental health problems that necessitate emergency care?

• Highly disruptive behavior (e.g., irrepressible hostility, aggression, violence, etc.)
• Inappropriate, persistent, and irrepressible elation
• Inability to communicate clearly (garbled or slurred speech; evidence of unconnected, disjointed, or rambling thoughts)
• Loss of contact with reality (apparently seeing or hearing things others cannot; holding beliefs greatly at odds with reality or probability)
• Stalking behaviors
• Harassment via threatening letters, emails, texts, IMs, etc.
• Suicidal thoughts
• Verbal threats to others or threatening behavior