00596nz a2200217n 4500 230628|||anznnbab||||||||||||||a|||||||d homoit0002862 https://homosaurus.org/v3/homoit0002862 homoit Kallmann syndrome Hypogonadotropic hypogonadism Intersex variations https://homosaurus.org/v3/homoit0000669 Kallmann syndrome can occur in people with XX or XY chromosomes and is a form of hypogonadism. People with Kallmann syndrome and XY chromosomes are often born with a smaller-than-typical penis and undescended testes. In adolescence, most people with Kallmann syndrome will either start puberty later than usual or not experience typical pubertal changes (such as developing facial hair and a deeper voice for people with XY chromosomes or developing breasts and starting to menstruate for people with XX chromosomes) unless they receive hormone therapy. Kallmann syndrome also affects someone’s sense of smell.