<unk><unk>  may be caused by endocrinologic or genetic causes. The most common endocrinologic causes of<unk><unk>  are hypothalamus-pituitary-gonadal (HPG) axis disorders. The most common genetic cause of<unk><unk>  is Kallmann syndrome. There are various genes that may be related to<unk><unk> , among which the kisspeptin system genes (KISS1 and KISS1R) are the most important genes.
Delayed puberty causes
Precocious puberty causes
Hypogonadism causes
Androgen insensitivity syndrome risk factors
Hypopituitarism causes
Growth hormone deficiency causes
Hypogonadism risk factors
Adrenal insufficiency causes