Headache, general weakness, and body aches may result from prolonged exposure to high-temperature working environments, catching a cold, chronic sleep deprivation, or excessive workload leading to fatigue. These symptoms could also be indicative of a fever, so it's important to monitor body temperature.

If an elevated temperature is observed, a complete blood count (CBC) should also be checked. If the CBC indicates elevated white blood cells, it's likely a bacterial infection, and appropriate medication should be administered. If lymphocyte levels are elevated, it's typically considered a viral infection, and antiviral medications should be prescribed.

Bacterial infections can cause various illnesses, such as pneumonia or urinary tract infections. Viral infections may lead to conditions like encephalitis or upper respiratory infections. Therefore, when these symptoms occur, it's essential to visit a healthcare provider to determine the underlying cause and receive appropriate treatment.