Hello, Welcome to HCM, The history and symptoms of your husband suggest me that he is having some infection. There are may conditions which can lead to these symptoms ranging they may be viral infection, bacterial infection, fungal infection and parasitic infections like Malaria. But these should be diagnosed by different lab investigations. To confirm malaria he need to undergo peripheral smear, CBC and QBC. These investigations can reveal regarding presence of malaria. The symptoms are more tin favor of viral fever rather than a malaria. He requires 1. Antipyretics like Paracetamol, 650 mg, three times a day 2. NSAIDS like Tab Ibuprofen, will help to reduce the pain. 3. Drink plenty of water. 4. Adequate rest is required. Thank you.