A nationwide survey in the Netherlands based on patients with genetic confirmation of the diagnosis estimates that the minimal incidence of CAIS is one in 99,000. The incidence of PAIS is estimated to be one in 130,000. Due to its subtle presentation, MAIS is not typically investigated except in the case of male infertility, thus its true prevalence is unknown. Controversy
Preimplantation genetic diagnosis
Preimplantation genetic diagnosis (PGD or PIGD) refers to genetic profiling of embryos prior to implantation (as a form of embryo profiling), and sometimes even of oocytes prior to fertilization. When used to screen for a specific genetic sequence, its main advantage is that it avoids selective pregnancy termination, as the method makes it highly likely that a selected embryo will be free of the condition under consideration.In the UK, AIS appears on a list of serious genetic diseases that may be screened for via PGD. Some ethicists, clinicians, and intersex advocates have argued that screening embryos to specifically exclude intersex traits is based on social and cultural norms as opposed to medical necessity. History
Recorded descriptions of the effects of AIS date back hundreds of years, although significant understanding of its underlying histopathology did not occur until the 1950s. The taxonomy and nomenclature associated with androgen insensitivity went through a significant evolution that paralleled this understanding. Timeline of major milestones
1950: Lawson Wilkins administers daily methyltestosterone to a karyotype|46,XY female patient, who shows no signs of virilization. His experiment is the first documented demonstration of the pathophysiology of AIS.
All five of these authors used the colloquial term "hermaphrodite" as the foundation of their taxonomies, although Simpson himself questioned the propriety of the word in his publication. Use of the word "hermaphrodite" in the medical literature has persisted to this day, although its propriety is still in question. An alternative system of nomenclature has been recently suggested, but the subject of exactly which word or words should be used in its place still one of much debate. Pseudohermaphroditism
"Pseudohermaphroditism" has, until very recently, been the term used in the medical literature to describe the condition of an individual whose gonads and karyotype do not match the external genitalia in the gender binary sense. For example, 46,XY individuals who have a female phenotype, but also have testes instead of ovaries—a group that includes all individuals with CAIS, as well as some individuals with PAIS—are classified as having "male pseudohermaphroditism", while individuals with both an ovary and a testis (or at least one ovotestis) are classified as having "true hermaphroditism". Use of the word in the medical literature antedates the discovery of the chromosome,  thus its definition has not always taken karyotype into account when determining an individuals sex.