Fever of one month duration needs to be investigated thoroughly to find the cause. Please visit a physician who will order the necessary tests based on history and examination: CBC, ESR, Blood Culture, Blood for Malarial Parasite, sputum for AFB, Complete Urinalysis.

Hello , fever has many reasons like infectious ( bacterial or viral) , autoimmune conditions, inflammatory diseases etc.... With fever as only complaint its difficult to diagnose ... Investigations are required like blood examination , sputum examination,chest x Ray, ultrasound , and others ... Even sometimes specific cause remains unrevealed after many investigation .