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New onset focal weakness in children with Down syndrome
Gordon Worley1, Rolla Shbarou, Amy N Heffner
1Department of Pediatrics, Program in Neurodevelopmental Pediatrics, Duke University Medical Center, Durham, NC 27710, USA. worle001@mc.duke.edu
Insights
New focal weakness in Down syndrome (DS) can stem from various neurological issues, including stroke and spinal cord injury. Early diagnosis is crucial as many causes are treatable, improving patient outcomes.
Area of Science:
- Neurology
- Genetics
- Pediatrics
Background:
- New onset focal weakness presents a diagnostic challenge in individuals with Down syndrome (DS).
- Understanding the diverse causes is essential for timely intervention in this population.
Observation:
- A study observed 10 cases of new onset focal weakness in patients with Down syndrome (DS), representing a 1.2% clinic prevalence.
- The median age of presentation was 4 years, with causes including stroke (Moyamoya, vaso-occlusive, venous sinus thrombosis), traumatic subdural hematoma, brain abscess, spinal cord injury (cervical stenosis, atlantoaxial instability), and brachial plexus injury.
Findings:
- Eight of the ten patients had potentially treatable conditions.
- Five patients underwent surgical intervention for their condition.
- The differential diagnosis for focal weakness in DS spans the entire nervous system, from the brain to peripheral muscles.
Implications:
- Prompt diagnosis of new onset focal weakness in Down syndrome patients can significantly improve prognoses.
- Highlights the need for comprehensive neurological evaluation in DS patients presenting with focal weakness.
- Emphasizes the broad spectrum of neurological conditions that can manifest as focal weakness in Down syndrome.
Abstract:
New onset focal weakness is relatively common in patients with Down syndrome (DS), and has broad differential diagnosis. Ten cases of new onset focal weakness in patients with DS were encountered or are currently being followed in two DS clinics, with a combined population of patients of approximately 850, for a clinic population prevalence of 1.2%. The median age at presentation was 4 years old (range 1 month-44 years). The causes of new onset focal weakness were: stroke from Moyamoya disease (two patients); stroke from vaso occlusive disease (one patient); stroke from venus sinus thrombosis (one patient); traumatic subdural hematoma (one patient); brain abscess (one patient); spinal cord injury (SCI) from cervical spinal stenosis (two patients); SCI from atlantoaxial instability (AAI) (one patient); and brachial plexus injury (one patient). Of the 10 patients with focal weakness, 8 had potentially treatable conditions, and 5 had surgery. The differential diagnosis of new onset focal weakness in DS is broad, with diseases reported involving all levels of the nervous system from brain to muscle. For some diagnoses, expeditious diagnosis may improve outcome.
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