A Case Report of Charles Bonnet Syndrome – The Silent Doubt: Am i Crazy?

Abstract

Introduction

The Charles Bonnet syndrome refers to symptoms of visual hallucinations that occur in patients with visual acuity or visual field loss. These are often called release hallucinations, reflecting the most widely accepted theory about their pathogenesis. The syndrome is most found in elderly patients, 70–85 years, and this probably reflect the mean age at which the most common underlying conditions are seen. It is probably more common than is thought and because either it is misdiagnosed as psychosis and/or dementia or it is not reported by patients because they fear that the hallucinations represent psychiatric disease.

Objective and method

The authors present the clinical case of a 89-year-old woman, with no previous psychiatric disease, admitted to hospital because of visual hallucinations in form of children and animals. She experienced them during months until she told someone. No psychiatric symptoms were found. The lady had a serious cataract on the left eye with total loss of the visual acuity, as documented by ophthalmologic examination.

Results

The patient initiated quetiapine 300 mg and will have period appointments with a neurologist. Further future information will be presented.

Conclusions

A correct diagnosis is essential to treat these patients and explaining them the meaning of the hallucinations is generally relieving. Many author disagree with antipsychotic agents, while others report benefit.

Disclosure of interest

The authors have not supplied their declaration of competing interest.