Eretic oligophrenia (o-li-go-fre-nia e-re-ti-che-skaya; Greek olygos - small, goderos - oligophrenic) is a type of mental underdevelopment of the individual and defects in the emotional-volitional sphere, manifested in increased emotional excitability , increased disinhibition with a hint of adventurous behavior, persistence of episodic reactions of resistance and negative psychotherapy. The etiology and pathogenesis of the Eretic form of oligophrenia has not been sufficiently studied. According to M.S.