What could be causing a persistent low-grade fever between 37.3°C and 37.6°C that won't go away?
Aug 31, 2024
Source: Cainiu Health
Dr. Yang Ziqi
Introduction
Low-grade fever between 37.3°C and 37.6°C that persists may be caused by factors such as the female menstrual cycle, high ambient temperature, common cold, tonsillitis, or systemic lupus erythematosus. If discomfort occurs, prompt medical attention is recommended. In daily life, it's important to drink plenty of water, get adequate rest, maintain indoor ventilation, avoid overexertion and excessive mental stress, and closely monitor body temperature changes and other physical symptoms.
Low-grade fever usually refers to mild fever. In general, a persistent low fever ranging from 37.3°C to 37.6°C may be caused by factors such as the female menstrual cycle, high ambient temperature, common cold, tonsillitis, or systemic lupus erythematosus. If discomfort occurs, it is recommended to seek medical attention promptly. Specific analyses are as follows:
1. Female Menstrual Cycle
During ovulation and around the menstrual period, women may experience slight fluctuations in body temperature due to changes in hormone levels, resulting in a low fever of 37.3°C–37.6°C. This typically does not require special treatment. Maintaining healthy lifestyle habits, getting adequate rest, and avoiding stress and anxiety are sufficient.
2. High Ambient Temperature
Remaining in a high-temperature environment for prolonged periods can impair the body's ability to dissipate heat, leading to a mild increase in body temperature. It is advisable to adjust the environmental temperature, ensure indoor ventilation, wear breathable and lightweight clothing, drink adequate fluids, and avoid excessive physical exertion.
3. Common Cold
Infection of the upper respiratory tract by viruses or bacteria can trigger an inflammatory response, potentially disrupting the function of the body's temperature regulation center and causing the temperature to rise to 37.3°C–37.6°C. Symptoms may also include nasal congestion, runny nose, cough, and sore throat. Under medical guidance, medications such as Lanqin Oral Liquid, Fenghan Cold Granules, or Compound Paracetamol and Amantadine Capsules may be used for treatment.
4. Tonsillitis
Tonsillitis is usually caused by bacterial or viral infections, spread of inflammation from adjacent organs, or decreased immune function, resulting in inflammation of the tonsils. This may continuously stimulate the immune system, producing fever-inducing mediators that prompt the hypothalamus to raise the body's temperature set point, thereby causing low-grade fever. Symptoms may include sore throat, cough, and ear pain. Patients should follow medical advice to use medications such as Roxithromycin Capsules, Jinlian Hua Granules, or Pudilan Anti-inflammatory Tablets.
5. Systemic Lupus Erythematosus (SLE)
SLE may be triggered by genetic, environmental, hormonal, and immune-related factors. When the immune system mistakenly attacks the body's own tissues, it may lead to systemic inflammatory responses; the release of inflammatory mediators can cause low-grade fever. Symptoms may include joint pain, skin rashes, and fatigue. Patients may take Hydroxychloroquine Sulfate Tablets, Cyclophosphamide Tablets, or Methotrexate Tablets under medical supervision.
In daily life, it is important to drink plenty of water, get sufficient rest, maintain indoor ventilation, avoid overexertion and excessive mental stress, and uphold healthy lifestyle and dietary habits, all of which help promote recovery.
