Preaxial polydactyly The condition has an estimated occurrence of 0.3–3.6 per 1000 live births. Postaxial hand polydactyly is most frequent in the United States in Black males. Preaxial polydactyly occurs in 0.08 to 1.4 in 1,000 live births. In the United States, it is more common in White people and also relatively frequent in Native American and Asian people. A 1994 study by Finley et al. combined data from Jefferson County, Alabama, United States, and Uppsala County, Sweden. This study found incidence of all types of polydactyly at rates of 2.3 per 1000 live births of White males, 0.6 per 1000 live births of White females, 13.5 per 1000 live births of Black males, and 11.1 per 1000 live births of Black females.
picture of Acrocallosal syndrome
medical cause of Arcus senilis
symptom of Oculopharyngeal muscular dystrophy
symptom of Buschke–Ollendorff syndrome
symptom of Romano–Ward syndrome
symptom of Nuchal cord
symptom of Spinocerebellar ataxia type 1
symptom of Pierre Robin sequence