Carlos Morra and Ernst Franzek: Psychopathological Symptoms

Unmotivated laughter


Definition: Presence of episodes of laughter without corresponding triggering stimuli (Parvizi, Arciniegas, Bernardini et al. 2006).


Exploration: The presence of unmotivated laughter can be established by interviewing or by observing the patient.




Parvizi J, Arciniegas DB, Bernardini GL, Hoffmann MW, Mohr JP, Rapoport MJ, Schmahmann JD, Silver JM, Tuhrim S. Diagnosis and management of pathological laughter and crying. Mayo Clin Proc. 2006;81:1482-6


October 19, 2019