Klinefelter’s Syndrome is a congenital condition caused by the abnormality of sex chromosomes. An extra “X” chromosome(s) is inherited, making them XXY rather than the more common XY (male sex) or XX (female sex).
Due to primary sex anatomy, meaning genitals, Klinefelter’s patients are considered to be male sex when being treated. Doctors will commonly have the expectation of adhering to the male sex body standards. A majority of patients also identify as male in gender. That being said, because of the ambiguity of secondary sex traits, which are other physical expressions of the body such as shape, body hair, etc, some do not identify with the male gender and instead prefer female, non-binary, or even simply stating that they are intersex. Sex-wise, it is more precise to say they are intersex than male, but either is suitable depending on the person’s preference.
Klinefelter’s Syndrome manifests in different ways for every patient. While there are more common features and symptoms, not all express them. The severity of Klinefelter’s and how greatly their hormones are affected varies.
Karyotyping for Klinefelter’s Syndrome, showing additional ‘X’ chromosome.
As mentioned before, the severity of symptoms can vary from person to person. In Sullivan’s case, his symptoms are very apparent—hence his early diagnosis. While he has the same primary sexual traits as the male sex, his secondary sexual traits are more ambiguous/mixed.
Physical Symptoms:
Social/Mental Symptoms:
Low energy levels
Tendency to be shy and sensitive
Difficulty expressing thoughts and feelings or socializing
Problems with reading, writing, spelling, or math
Body Reference 2: gynecomastia reference, specifically how Sullivan’s upper body looks.
Body Reference 1: general body. art credit: cosmicstardreamer