I got a mild fever for over 3 weeks. no cold, no cough but my head is not in comfort zone. also i i fever only till the neck point. visited my gp on the first week, he gave paracetamol and allerway. meds have no effect. any suggestions?

Testing needed: If you have documented fevers for 3 weeks, you have a fever of unknown origin which warrants evaluation and testing by a specialist in internal medicine or infectious diseases. The workup involves a thorough history and system review, complete physical examination, multiple cultures, scans, searches for infection, autoimmune diseases, malignancies. Hospitalization may be recommended for the tests.