Epidemiology

Pseudohypoparathyroidism (PHP) is extremely rare, and reported prevalence varies between countries. One large nationwide survey in Japan conducted in 2017 estimated the prevalence at 1.2 cases per 100,000 population. This represents an increase from an earlier estimate of 0.34 cases per 1,000,000 in 1997, and is likely due to improved recognition and diagnostic methods.[3]​ One 2011 National Patient Registry review in Denmark identified 60 patients, a prevalence of 1.1 cases per 100,000 inhabitants.[4] In Poland, data from the National Health Fund spanning 2013-2023 suggests a lower prevalence of 0.62 to 0.64 per 100,000 person-years nationwide, though rates are higher in some subregions and time periods (up to 1.47).[5]​ Based on expert opinion, type 1a is the most common form. Prevalence of PHP is higher in females.​[3][4][5]

Use of this content is subject to our disclaimer