Can Dengue Cause High Fever With Ear Pain?

sir, my child is suffering from high fever 103 from last 10 hrs .he is 12 yrs old and weighs 51kg and is strong, one month back he had dengue and now i feel its the same again.he is no other rashes or joint pain except pain in one ear. we are giving him fluids and sponging and geting d fever down as we did this earlier also.can we give him meftal forte which has mefenamic acid 500mg and paracetamol 450 mg to get his fever down as regular 650 paracetamol is not able to get his fever down.