Hi welcome to Healthcaremagic
Hi..., the if the cause for the headache is due to hypoglycemia
, then it will subside by having food..
but since the age is only 1 there cant be any major problem,, hence she must be rule out of the refractive error
, this can lead to frequent episodes of headache at this age.. consult a ophthalmologist
Hope I have answered your question..