What are the reasons for low-grade fever that subsides but then recurs repeatedly?
Mar 29, 2023
Source: Cainiu Health
Dr. Yang Shuwen
Introduction
Low-grade fever refers to mild fever. The recurrence of low-grade fever—subsiding and then returning—is often caused by factors such as weakened immunity, chronic pneumonia, pyelonephritis, etc., and treatment should be targeted according to the underlying cause. In addition, conditions like rheumatic fever and tuberculosis can also lead to recurrent symptoms. It is recommended to seek medical attention promptly; a doctor will make a diagnosis and provide appropriate treatment based on the specific situation, identifying the cause and implementing suitable therapeutic measures.
Generally, low-grade fever refers to mild fever. The recurrence of fever after temporary remission may be caused by factors such as weakened immunity, chronic pneumonia, pyelonephritis, etc., and treatment should be directed at the underlying cause. Specific analyses are as follows:
1. Weakened Immunity
After the fever subsides, the body's immune function may still remain low. If not properly managed, bacteria, viruses, and other pathogens may re-enter the body, leading to diseases such as upper respiratory tract infections, causing symptoms like fever, cough, and other discomforts, resulting in recurrent fever. It is advisable to strengthen physical activity and consume nutritious foods such as lean meat and milk to enhance one's resistance.
2. Chronic Pneumonia
Persistent inflammation leads to continuous release of inflammatory mediators, causing recurrent low-grade fever—fever that resolves temporarily but returns. For example, in chronic pneumonia, anti-infective therapy under a physician’s guidance with medications such as flucloxacillin capsules, amoxicillin capsules, or piperacillin capsules may be prescribed.
3. Pyelonephritis
Acute urinary tract infection occurs when bacteria enter through the urethral opening into the urethra and bladder, leading to localized bacterial colonization and damage to the bladder mucosa. When the inflammation spreads upward to the ureters and kidneys, it causes pyelonephritis. This condition often presents with sudden disappearance of fever and a tendency for recurrence, frequently associated with bacteremia. Anti-inflammatory treatment using cefaclor capsules under medical supervision may be recommended.
In addition, conditions such as rheumatic fever and tuberculosis can also lead to recurrent illness. It is recommended to seek timely medical attention. A doctor will make a diagnosis based on individual circumstances, identify the cause, and implement appropriate treatment measures.
