-some case is recurrent vaginal bleeding (more rare).
-first menstruation normally appears approximately two and a half years after the onset of breast development.
– due to unusual sensitivity of the endometrium to very low prepubertal levels of oestrogens
Not to confuse with:
Pseudomenstrual in newborn which occurs few days after delivery due to hormone effect from mother.
For that 2 years old, still need to rule out:
-Scratching or foreign body.
-Rule out bleeding from anus.