What a teenager can be sent to a mental hospital?

"What" - not quite the correct expression. In a psychiatric hospital, with the consent of parents, sending a teenager whose clearly expressed symptoms of mental illness or borderline mental disorders. It can be obsessions, voices, signs of unwarranted aggression, a prolonged state of causeless anxiety, depression, and anxiety. Suicide attempts, anorexia, etc. In some cases, direct from the recruiting office for examination and diagnosis. Force, sent for psychiatric examination in the case of committing certain crimes.
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