What causes fever to recur after it has subsided?
Dec 29, 2022
Source: Cainiu Health
Dr. Guo Xiheng
Introduction
Fever is related to various factors, and most fevers are caused by infections. For example, when bacteria or viruses affect the body, they stimulate the thermoregulatory center, leading to an increase in body temperature. If only antipyretic medications are taken orally, the underlying illness may not be completely resolved, and fever may recur once the medication loses its effect. Non-infectious factors such as heatstroke, thyroid disorders, and hematological diseases can also cause fever in patients.
Fever recurring after defervescence is a sign of acute inflammation in the body, indicating that the body's immune resistance is fighting against pathogenic bacteria. At this point, measures to boost immunity should be taken, or antibiotics used to eliminate the pathogens. So, what causes fever to recur after it has subsided?
Why does fever recur after initial recovery?
Fever is related to multiple factors, with most cases caused by infections. For example, when bacteria or viruses affect the body, they stimulate the body's temperature regulation center, leading to elevated body temperature. Simply taking antipyretic medications may reduce fever temporarily, but if the underlying illness isn't fully resolved, fever can return once the effect of the medication wears off. Non-infectious factors such as heatstroke, thyroid disorders, and blood system diseases can also cause fever. Solely relying on antipyretic drugs may result in fever recurrence. It is essential to visit a hospital for relevant examinations to identify the exact cause of fever, receive appropriate antipyretic treatment and physical cooling methods, and treat the underlying disease accordingly.
Drink plenty of warm water, get adequate rest, avoid greasy, spicy, and irritating foods, and promptly undergo tests such as complete blood count (CBC), C-reactive protein (CRP), and mycoplasma testing to determine the type of pathogen causing the infection. Depending on the severity of infection and specific symptoms, intravenous or oral administration of sensitive antibiotics may be used. Anti-inflammatory treatment should be administered according to a full course, and a follow-up evaluation should be conducted after 3–7 days of continuous medication.
Measures to enhance immunity can be adopted, or antibiotics chosen to kill the pathogens. Drink plenty of warm water, rest well, avoid greasy, spicy, and irritating foods, and undergo early testing of blood count, C-reactive protein, and mycoplasma to diagnose the specific infectious pathogen. We hope this response has been helpful to you. Wishing you good health and happiness!
