Table 1.

Causes of delayed puberty

Hypergonadotropic hypogonadism	Hypogonadotropic hypogonadism
Congenital	Congenital
Males	Idiopathic hypogonadotropic hypogonadism
Klinefelter’s Syndrome	Kallmann Syndrome Congenital multiple pituitary hormone deficiencies
Cryptorchidism
Congenital Anorchia
Females
Turner’s Syndrome
Acquired	Acquired
Autoimmune conditions Infection Chemotherapy Radiation	CNS tumours Hyperprolactinemia Chemotherapy Radiation Infiltration Malabsorption Hypothyroidism Restrictive eating, excessive exercise
	Constitutional delay of growth and puberty