My child is 8 years old. He has been suffering from allergy since babihood. Now he has been little bit recovered. But for the last 3 months he feels irritation in his throat causing cough continuously. After taking ascoril LS several times, it reduces but in the last week he had a fever with the same cough. Though his fever has been over but he still continuously coughing and reporting that his throat is being irritated, though he has been taking now Cherilos as cough syrup. What should I do to stop his irritation, pls advise.