The United States affiliate of the Organization Intersex International (OII)

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Types of Intersex/Intersex Variations

What are some biological factors that can underly intersex?

Note: A number of the items that will be linked to below are in the process of being edited for inaccuracies.

They include…

  • 17-beta-hydroxysteroid dehydrogenase deficiency
  • 5-alpha reductase deficiency
  • Androgen Insensitivity Syndrome – AIS
  • Ambiguous genitalia
  • Aphallia
  • Clitoromegaly
  • Congenital Adrenal Hyperplasia – CAH
  • Cryptorchidism
  • Endocrine-disrupting chemicals
  • Gonadal dysgenesis, partial or complete
  • Hypospadias
  • Iatrogenic
  • Idiopathic
  • Kallmann syndrome
  • Klinefelter Syndrome
  • Late Onset Adrenal Hyperplasia – LOAH
  • Micropenis
  • Mild Androgen Insensitivity Syndrome – MAIS
  • Mosaicism involving sex chromosomes
  • MRKH – Müllerian agenesis; vaginal agenesis; congenital absence of vagina
  • Not XX and not XY
  • Ovotestis, formerly called “true hermaphroditism”
  • Partial Androgen Insensitivity Syndrome – PAIS
  • Progestin-induced virilization
  • Swyer syndrome
  • Turner syndrome
  • XXY

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