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Characterizing Sunflower syndrome: a clinical series
James R Barnett1, Bradley M Fleming1, Kennedy R Geenen1
1Pediatric Epilepsy Program, Department of Neurology, Massachusetts General Hospital, Boston, MA, USA.
Summary
Sunflower syndrome is a rare epilepsy characterized by light-induced seizures, often refractory to medication. Non-pharmacological strategies show varied success in managing these photosensitive epilepsy episodes.
Area of Science:
- Neurology
- Epileptology
- Pediatric Neurology
Background:
- Sunflower syndrome is a rare epilepsy syndrome.
- It is characterized by photosensitivity and stereotyped seizures, often triggered by light.
- Heliotropism is a key feature of this condition.
Purpose of the Study:
- To characterize the clinical phenotype of Sunflower syndrome.
- To understand the presentation and progression of this rare epilepsy.
- To identify challenges in managing Sunflower syndrome.
Main Methods:
- Retrospective review of medical records from Massachusetts General Hospital for Children.
- Analysis of clinical data from 24 patients diagnosed with Sunflower syndrome.
- Evaluation of seizure characteristics, treatment responses, and non-pharmacological interventions.
Main Results:
- Twenty-four patients (18 female) were identified, with a median age of 11.5 years at evaluation.
- Hand-waving episodes (HWEs) were the primary seizure type, with onset around age six.
- Seizures were largely refractory to antiepileptic drugs; non-pharmacological strategies and tinted glasses offered partial relief.
Conclusions:
- Sunflower syndrome is a generalized, pharmacoresistant epilepsy with childhood onset.
- Effective treatments remain limited, highlighting the need for further research.
- Improved clinical care and scientific understanding require long-term prospective studies.

