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Course and outcome of acute cerebellar ataxia
A M Connolly1, W E Dodson, A L Prensky
1Department of Pediatrics, Washington University School of Medicine, St. Louis, MO.
Insights
Most children with acute cerebellar ataxia recover fully, even after viral illnesses like chickenpox. This large study shows a high recovery rate and few long-term learning issues in pediatric patients.
Area of Science:
- Neurology
- Pediatrics
- Infectious Diseases
Background:
- Acute cerebellar ataxia (ACA) is a neurological disorder affecting children.
- Previous studies on ACA outcomes have varied, necessitating further investigation.
- Understanding the etiology and prognosis of ACA is crucial for pediatric care.
Purpose of the Study:
- To characterize the clinical features and outcomes of acute cerebellar ataxia in a large pediatric cohort.
- To determine the recovery rates and long-term sequelae of ACA.
- To identify potential triggers and associated conditions of ACA.
Main Methods:
- Retrospective analysis of 73 children diagnosed with ACA at a single institution over 23 years.
- Detailed review of medical records to identify prodromal illnesses, including viral infections and immunizations.
- Longitudinal follow-up of 60 children for at least 4 months to assess recovery and long-term outcomes.
Main Results:
- Viral illnesses, particularly chickenpox, were common preceding causes of ACA.
- A high percentage of children (91%) achieved complete recovery from ataxia within 4 months.
- Long-term learning problems were infrequent, affecting only 5 out of 60 children.
- Recovery rates for non-varicella-related ataxia were significantly better than previously reported.
Conclusions:
- Acute cerebellar ataxia in children has a generally favorable prognosis with high rates of complete recovery.
- While transient behavioral issues can occur, sustained learning problems are rare.
- This study provides the most comprehensive data to date on ACA in a pediatric population, informing clinical expectations and management.
Abstract:
We report a study of 73 consecutive children with acute cerebellar ataxia, representing all of the children evaluated at St. Louis Children's Hospital during a 23-year-period to whom this diagnosis could appropriately be assigned. Twenty-six percent had chickenpox, 52% had other illnesses that were presumed to be viral, and in 3% the ataxia was related to immunization. Nineteen percent had no definite prodrome. Sixty children were followed for 4 months or longer after onset of their ataxia (mean, 7.4 +/- 6.0 years). Ninety-one percent (55/60) of these, including all children with chickenpox, recovered completely from ataxia. Eighty-nine percent (39/44) of the children with non-varicella-related ataxia recovered completely from the ataxia, a much better rate of recovery than what was found in prior large studies. One fifth of the children followed for more than 4 months experienced transient behavioral or intellectual difficulties, but only 5 of the 60 children demonstrated sustained learning problems. This study represents the largest reported series of acute cerebellar ataxia and the most complete characterization of the clinical features and outcome of this illness.