hello mam my son is 3 years old he is cold and cough, after I give medicine cold and cough is ok but after sometime cold and cough coming so how to treat my son

A. Mam your child is having some allergic reaction which is why it is repeating like this or there is still congestion in the chest and throat of your child so along with the oral medicines that you give giving nebulising to the child is going to be equally helpful