Hersh Yusk Syndrome is rare

Jones Hersh Yusk syndrome is a "rare disease" according to the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH).

This means that Jones Hersh Yusk syndrome, or a subtype of Jones Hersh Yusk syndrome, affects less than 250,000 people in the United States.

Source - National Institutes of Health (NIH)