A state of intersex or sexual ambiguity, involving the GENOTYPE, the GONADS, the reproductive tract, and/or the external GENITALIA or PHENOTYPE. This concept covers TRUE HERMAPHRODITISM and PSEUDOHERMAPHRODITISM. True hermaphrodites are rare and they possess gonadal tissues of both SEXES, tissues from the OVARY and the TESTIS. Pseudohermaphrodites possess gonadal tissue of one sex but exhibit external phenotype of the opposite sex.