The causes of non-resolving and recurring fevers include both infectious and non-infectious diseases. Infectious diseases are more common.
1. Infectious diseases: for example, influenza, encephalitis B, pneumonia, acute gastroenteritis, tonsillitis, epidemic cerebrospinal meningitis, sepsis, acute mastitis, dengue (acute infectious disease, the skin can be seen as red as paint), sepsis, paratyphoid fever and so on.
2. Non-infectious diseases: e.g. summer fever, intracranial injury, leukemia, malignant tumor, allergy, vaccination reaction, infusion reaction, connective tissue disease, malignant histiocytosis.
Patients with recurring fever need to do blood tests, ultrasound, urine routine or blood sedimentation and other related tests. The patient should drink more water and rest.
Patients with recurring fever should consult a doctor in time to avoid delaying their condition.