Table 3. The diagnosis and differential diagnosis of normal variants and pathological types of puberty.

Early normal or pathological puberty		Late normal or pathological puberty
Pathological entity	Normal variant	Normal variant	Pathological entity
True precocious puberty	Mammary gland hyperplasia of the newborn	(Pubertas tarda)	Hypergonadotropic hypogonadism
Precocious pseudopuberty	Premature thelarche	(Pubertas tarda)	Hypogonadotropic hypogonadism
Premature adrenarche	Premature pubarche	(Pubertas tarda)
	Constitutional or idiopathic acceleration of growth and puberty	Constitutional or idiopathic delay of growth and puberty