What causes frequent fevers?

Fever generally refers to an elevated body temperature. In most cases, frequent fever may be caused by conditions such as the common cold, tuberculosis, rheumatoid arthritis, purulent meningitis, leukemia, and other diseases. The specific causes are analyzed as follows:

1. Common Cold

The common cold is an acute respiratory tract infection, mostly caused by viral or bacterial infections. Patients may experience recurrent fever, along with symptoms such as nasal congestion, runny nose, cough, and sputum production. Under medical guidance, patients can take medications such as compound paracetamol and amantadine tablets or Ganmaoling granules. If cough and sputum are prominent, doctors may prescribe antitussive and expectorant drugs such as dextromethorphan hydrobromide tablets or ambroxol hydrochloride tablets.

2. Tuberculosis

Tuberculosis is caused by infection with Mycobacterium tuberculosis. Fever patterns vary and may include low-grade fever in the afternoon, irregular fever, or persistent high fever, often accompanied by symptoms such as night sweats, weight loss, and fatigue. Under medical supervision, patients can be treated with medications such as isoniazid tablets and rifampicin capsules.

3. Rheumatoid Arthritis

Rheumatoid arthritis is generally associated with factors such as autoimmune dysfunction, genetic predisposition, and infection. Local inflammation caused by inflammatory factors may lead to recurrent fever, as well as joint swelling and deformities. Under medical guidance, patients can use nonsteroidal anti-inflammatory drugs (NSAIDs), such as loxoprofen sodium tablets or diclofenac sodium sustained-release tablets.

4. Purulent Meningitis

Purulent meningitis is typically caused by pyogenic bacteria invading the cranial cavity, resulting in inflammatory changes in the meninges. If not effectively treated, repeated stimulation by inflammatory factors may cause frequent fever, accompanied by chills, headache, vomiting, impaired consciousness, hemiplegia, and other symptoms. It is recommended that patients follow medical advice and receive treatment with intravenous antibiotics such as cefoperazone sodium for injection or penicillin sodium for injection.

5. Leukemia

In patients with leukemia, excessive proliferation of leukemic cells accelerates metabolism, potentially leading to recurrent fever. The fever symptoms are similar to those caused by the common cold and may be accompanied by fatigue, night sweats, and weight loss. Immune function is typically weakened in these patients. Treatment under medical guidance may include medications such as imatinib mesylate tablets or nilotinib capsules. Hematopoietic stem cell transplantation should be performed promptly when conditions are suitable.

Patients are advised to seek timely medical attention when experiencing discomfort and to undergo standardized treatment under a doctor's guidance, which helps promote recovery.