Why does the upper body feel hot while the lower body does not?

Under normal circumstances, feeling hot in the upper body while the lower body remains cool may be caused by improper clothing, fever, or poor blood circulation. The specific analysis is as follows:

1. Improper Clothing

Feeling cool in the head but hot in the body may result from physiological factors such as overdressing, or differences in heat generation and dissipation mechanisms between the head and torso. Normally, the human head dissipates heat more quickly and tends to sweat more easily than other body parts. As sweat evaporates, it carries away heat, which can lead to a sensation of warmth in the body while the head feels relatively cool. In such cases, adjusting clothing appropriately and resting adequately usually resolves the issue, and no special treatment is typically required.

2. Fever

In the human vascular system, blood vessels in the upper body are slightly closer to the surface than those in the lower body. When excess body heat is generated, the upper body often feels hotter. In such situations, assess the patient's environment; if it is excessively warm, improving ventilation or cooling the surroundings will gradually relieve symptoms. It is also important to measure body temperature—fever is indicated when temperature exceeds 37.5°C. In such cases, antipyretic medications such as acetaminophen tablets or ibuprofen sustained-release capsules are recommended under medical guidance.

3. Poor Blood Circulation

If an individual has a generally weak constitution leading to impaired systemic blood circulation, blood flow may slow down, preventing adequate oxygen delivery to various organs. Reduced oxygen supply to the lower body may result in a sensation of heat in the upper body while the lower body feels cool. In such cases, prompt medical evaluation is advised. Under a doctor’s supervision, medications such as enteric-coated aspirin tablets or clopidogrel hydrogen sulfate tablets may be used. Additionally, regularly soaking feet in warm water and engaging in moderate physical activity in daily life can help improve blood circulation.

When experiencing bodily discomfort, timely medical consultation is essential to identify the underlying cause and receive appropriate treatment according to medical advice. Maintaining a light diet, regular sleep patterns, and moderate physical exercise are also recommended for overall health.