Thank you for your query on Healthcare Magic.
Underarm perspiration can start from the age of 7 years due to the action of hormones produced by adrenal glands
and it is a normal phenomenon.
Headache may be due to stress or anxiety related.
Is there any history of migraine
in the family?
I advise you to go for vision testing.
The complaints are not signs of early puberty.
She needs physical examination by her pediatrician
followed by investigations like CBP, thyroid
profile to rule out any medical condition.
Hope I have answered your query.