First of all i would like to say , increase appetite and hair loss both are different entity.
First and foremost balanced diet with proper emphasis on vitamin calcium and iron.
Hair should be washed and brushed properly. Similar importance should be given to trimming to prevent tearing of hair.
Combs with wide tooth should be made use of. Split ends should be got rid of as part of trimming.
Blow drying should be avoided because the heat generated is found to be damaging from the point of view of hair.
Gentle massaging of scalp
regularly, preferably with drops of warm oil contributes against hair fall
" i wish your child good health"