The foundation of common law, the 17th Century Institutes of the Lawes of England described how a hermaphrodite could inherit "either as male or female, according to that kind of sexe which doth prevaile." Legal cases have been described in canon law and elsewhere over the centuries.
Foremost, we advocate use of the terms "typical", "usual", or "most frequent" where it is more common to use the term "normal." When possible avoid expressions like maldeveloped or undeveloped, errors of development, defective genitals, abnormal, or mistakes of nature.
Others will not become aware that they are intersex unless they receive genetic testing, because it does not manifest in their phenotype.