My daughter is 4.5 yrs, she suffering from allergy cough, her esonophil s 1point higher than normal, for past one year she getting frequent sneezing and coughing, dr prescribed montelukst for three months, during that period she felt better and normal, but again she get cough for period of every month . Dr suggesting that she Wil get nrml onc her lung develop properly ..at the age of 8.. how long it takes to come out of this allergic reaction,, does it ther any end point for this. Kindly suggest