Having feverish feeling, headache, and weakness for a whole month can be tiring, especially when basic tests like MP, Widal, sugar, and thyroid are normal. This can sometimes occur due to ongoing viral infections, low haemoglobin, vitamin deficiencies (such as B12 or vitamin D), stress, poor sleep, or post-infection fatigue. In some cases, mild infections or inflammation may not be evident on initial tests, so further evaluation may be needed. Since your symptoms are continuing, it is important not to ignore them. Your doctor may suggest additional tests, such as a complete blood count, vitamin levels, or other investigations, only if required after proper assessment. This helps identify the exact cause instead of just treating symptoms. To better manage this, focus on basic care. Take proper rest, stay well hydrated, and eat a balanced diet with fruits, vegetables, and protein-rich foods. Try to maintain a regular sleep routine and reduce stress. Avoid self-medicating repeatedly for a fever without knowing the cause. If symptoms persist or worsen, or if you develop new issues such as weight loss or a persistent high fever, a detailed check-up can help guide the right treatment.