hebephrenia

Etymology
From (also ) +.

Noun

 * 1)  A type of mental disorder occurring during puberty characterized by silly behavior and inappropriate laughter.
 * 2)  A form of schizophrenia characterised by inappropriate behaviour and emotional responses.

Translations

 * Finnish: hebefrenia
 * French:
 * Greek: ηβηφρένεια
 * Russian:
 * Ukrainian: гебефренія