What causes a sudden feeling of heat in the body?

Sudden episodes of body heat may generally be caused by environmental factors, intense physical activity, colds, perimenopausal syndrome, tuberculosis, and other reasons. It is recommended that patients follow medical advice for symptomatic treatment. Specific details are as follows:

1. Environmental Factors

When the ambient temperature is too high, it often affects the body's ability to dissipate heat, leading to accumulation of internal heat and a sudden feeling of warmth. Symptoms usually subside once the person leaves the hot environment and typically do not require special treatment.

2. Intense Physical Activity

Under normal conditions, human body temperature remains stable. However, sudden vigorous exercise can accelerate blood circulation and cause blood vessel dilation, resulting in a sensation of fever. This is a normal physiological response and does not require specific treatment; symptoms generally resolve after rest.

3. Colds

If proper warmth is not maintained during cold weather, catching a cold may trigger the body's immune response to expel viruses, causing a gradual rise in body temperature and feelings of fever. Patients may take medications such as acetaminophen tablets or ibuprofen sustained-release capsules as directed by a physician.

4. Perimenopausal Syndrome

During the period before and after menopause, hormonal imbalances—particularly fluctuating estrogen levels—can lead to autonomic nervous system dysfunction, which may cause episodic sensations of body heat. Patients may take medications such as oryzanol tablets or Wuji Baifeng pills as prescribed.

5. Tuberculosis

Tuberculosis is associated with infection by Mycobacterium tuberculosis. Pulmonary infection often causes symptoms such as low-grade fever, night sweats, fatigue, and weight loss. The fever typically occurs as an afternoon low-grade fever but may also present as intermittent episodes of heat. Patients may be treated with medications such as isoniazid tablets and rifampicin tablets under medical supervision.

In addition, such symptoms may also be related to conditions such as systemic lupus erythematosus or rheumatoid arthritis. It is important to seek timely medical evaluation and appropriate treatment to avoid delays in managing the underlying condition.