My father is sick for 4 days with fever, cold, cough. day one i only gave paracetamol with cough syrup, for day 2,3, and 4 which ia today i gave azithromycin antibiotic with paracetamol, but still after some 4-6 hours his forehead starts getting hot slowly and gradually again fever comes, but it is not very high fever. but as he is aged he shivers sometimes. He is having high bp as well and is a heart patient, after all this he feels weak what can be done to correct that, and suggest some ways by which we can control fever from coming back. please help doctor..