Hi....., There are various causes for fever... Which includes viral, bacterial, fungal, etc..., Viral fever are usually self limiting within an week with symptomatic management.... Bacterial and fungal fever needs antibiotics and antifungals to treat the infections.... The treatment of a fever depends on its cause. In most cases, except in hyperthermia, paracetamol can be given to lower the temperature....Consult your Physician.....