Contact a general physician, who will evaluate the fever type and origin looking at your medical history and investigations. Doctor might order additional tests for better understanding.

Arrange your previous tests and prescriptions in a chronological manner, for better understanding of  the disease progression. Conservative measures to reduce fever:- 1) Keep clothing to a minimum. Avoid over-dressing and multiple layers of clothing. Let the heat dissipate. 2) Avoid strenuous activities, hot weather, warm/hot foods. 3) Take sponge bath. Avoid water that is too cold, which might cause shivering.