An 86-year-old woman with visual impairment who developed a vivid, visual hallucinatory state in clear sensorium is described. This picture conforms to the description of Charles Bonnet Syndrome. She also experienced musical hallucinations. The role of sensory deprivation in the pathogenesis of this syndrome is discussed.
References
1.
BonnetC.Essai analytique sur les facultes de l'ame.Copenhagen and Geneva: Philbert, 1760, (Quoted by Morsier, 1967).
2.
de MorsierG.Le syndrome de Charles Bonnet: hallucinations visuelles des vieillards sans deficience mentale.Annales Medico Psychologiques1967; 125 (2): 677–702.
3.
Damas-MoraJ.The Charles Bonnet syndrome in perspective.Psychological Medicine1982; 12 (2): 251–261.
4.
RaghuramR., KeshavanM., ChannabasavannaS.Musical hallucinations in a deaf middle-aged patient.J Clin Psychiatry1980; 41 (10): 357.
5.
RossE.D., JossmanP.G., BellB.Musical hallucinations in deafness.JAMA1975; 231: 620–622.
6.
HorowitzM.J.The imagery of visual hallucinations.J Nerv Ment Dis1964; 38: 513–522.
7.
McNamaraM.E., HerosR.C., BoilerF.Visual hallucinations in blindness: the Charles Bonnet syndrome.Journal Neurosci1982; 17 (1): 13–15.