What is the prevalence of hemiparesis in Sturge-Weber syndrome (SWS)?

Updated: Dec 26, 2018
  • Author: Masanori Takeoka, MD; Chief Editor: George I Jallo, MD  more...
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The incidence of hemiparesis is approximately 33% in patients with SWS, varying from 25-56%. The disorder occurs secondary to ischemia with venous occlusion and thrombosis. Commonly, transient weakness may occur with seizures and may increase with recurrent seizures. Transient hemiplegia may be accompanied by migraine headache, suggesting a vascular mechanism. However, Jung et al reported a case of a woman with headache and left hemiparesis but no neuroimaging evidence of acute thrombosis formation or recent vascular event. [43]

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