Psychological violence refers to behaviour that is controlling, isolating, humiliating or embarrassing and which causes the person upon who it is perpetrated psychological distress.
Source:
U.N. Secretary-General, In-depth Study on All Forms of Violence Against Women: Report of the Secretary General, para.113, U.N. Doc.A/61/122/Add.1 (July 6, 2006), https://documents-dds-ny.un.org/doc/UNDOC/GEN/N06/419/74/PDF/N0641974.pdf?OpenElement