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Published on: April 14, 2014
[Differential diagnosis of visual hallucinations]
1Universitäts-Kinderspital beider Basel, Abteilung für Neuropädiatrie, Basel, Schweiz. Peter.Weber@unibas.de
Insights
Visual hallucinations in children often mimic infantile migraine. Differential diagnosis should consider focal epilepsy and reversible posterior leucoencephalopathy.
Area of Science:
- Neurology
- Pediatrics
- Neuroscience
Context:
- Visual hallucinations in children require careful differential diagnosis.
- A retrospective study analyzed pediatric cases admitted to a university hospital's neu ropediatrics department.
Purpose:
- To investigate the clinical characteristics and potential etiologies of visual hallucinations in children.
- To identify patterns and associations that aid in diagnosing pediatric visual hallucinations.
Summary:
- 14 children with visual hallucinations were identified, with common symptoms including altered size, form, and movement perception.
- Neurologic examination revealed few abnormalities, but electroencephalography (EEG) showed hypersynchronous activity in some, suggesting focal epilepsy or reversible posterior leucoencephalopathy.
- Findings suggest recurrent visual hallucinations in children may share features with infantile migraine, necessitating consideration of epilepsy and posterior leucoencephalopathy.
Impact:
- This study aids clinicians in differentiating causes of visual hallucinations in pediatric patients.
- Highlights the importance of EEG and considering specific neurological conditions in the diagnostic workup.
- Provides insights into the transient nature and potential pathophysiological links of visual hallucinations in children.
Objective:
Visual hallucinations in children need a differential diagnostic effort.
Methods And Patients:
In a retrospective cohort study we identified all children, admitted to the Department of Neuropediatrics of a University Hospital between 1.1.2001 and 31.12.2003 suffering from visual hallucinations. All children underwent neurologic examination and electroencephalography (EEG).
Results:
14 children with visual hallucinations were identified. Disturbed perception of the size (9 of 14 cases), of the form (5 of 14 cases), and irregular perceptions of movements (5 of 14 cases) were most frequently reported. One child showed a transient hemihypesthesia, the only pathologic finding in the neurologic examination. Three children had features of hypersynchronic activity in EEG: one child undergoing immunosuppressive drug therapy and with a visual hallucination in context of a reversible posterior leucoencephalopathy showed a focal slow background activity, whereas three children had a sharp wave activity. Two of these children fulfilled the criteria for a focal epilepsy, one of them of the frontal lobe, one of the temporal lobe.
Conclusion:
Recurrent visual hallucinations are frequently transient and show clinical and pathophysiologic features reminiscent of infantile migraine. Psychic etiology, focal epilepsy and, under special circumstances, a reversible posterior leucoencephalopathy have to be considered when making a differential diagnosis.
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