What is the prevalence of progressive bulbar palsy (PBP)?

Updated: Apr 28, 2014
  • Author: Hidehiro Takei, MD; Chief Editor: Adekunle M Adesina, MD, PhD  more...
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The prevalence of adult-onset progressive bulbar palsy (PBP) is difficult to determine because of the significant overlap with bulbar-onset ALS. For infantile PBP, approximately 60 cases of Brown-Vialetto-Van Laere syndrome have been reported to date, and around one half of those cases were sporadic. [11] The male-to-female ratio is approximately 1:3 in reported cases. Fewer than 40 cases of Fazio-Londe disease have been reported to date.

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