Is it okay if the thermometer shows a normal temperature?

Even if your core body temperature is normal, you may feel localized heat or cold due to vascular reactions in the face, hands, and feet, as well as changes in sweating or sensation.

What should I record when my face feels hot but my feet feel cold?

The term 'temperature regulation' alone cannot determine the cause of Sang-yeol-ha-han (heat in the upper body and cold in the lower body). Record separately whether the facial heat and the coldness in the feet or lower abdomen occur at the same time or alternately, and whether the actual body temperature changes at those times. Steps to check when the face is hot and feet are coldYou can continue to see how to record this along with sleep, digestion, and sweating below.

What is involved in body temperature regulation?

The brain's regulatory center, autonomic nerves, skin blood vessels, sweat glands, muscles, and metabolism work together to produce and release heat. Hormones, infections, medications, sleep, and the environment can influence this process.

What records would be helpful?

Record the body temperature, areas of heat or cold, indoor temperature, sweating, skin color, and changes after activity or meals for the same time period. Recording measured values and sensations separately makes it easier to distinguish between actual fever and subjective temperature perception.

When is medical confirmation a priority?

If there is persistent high fever or hypothermia, changes in consciousness, severe dehydration, or difficulty breathing, do not view these as issues of constitution or heat-cold imbalance; you must seek immediate medical evaluation at a healthcare institution.

Record measured body temperature and perceived heat sensations separately

Body temperature regulation is the process of balancing the heat produced by the body and the heat released to the outside. Evaporation of sweat, constriction and dilation of skin blood vessels, muscle shivering, and metabolism work together and are influenced by ambient temperature, humidity, activity, and hydration status.

Commonly confused terms and their differences: A thermometer shows the temperature of the measured area at a specific point in time, but it does not explain the entirety of subjective heat or cold sensations in the face, hands, or feet. Conversely, skin may feel hot even if there is no actual high fever, so measured values and sensations must be recorded separately without being mixed.
Information to record before your visit: Record the time and value measured with the same thermometer and at the same site, along with indoor temperature, exercise, meals, sleep, sweating, and skin color. Recording the amount of water consumed and any new medications also makes it easier to distinguish between actual fever, environmental influences, and sensory changes.
Scope of this material: MedlinePlus materials were used to explain the role of sweat in temperature regulation and the scope of dangerous heat-related illnesses. A single normal temperature reading does not rule out all causes of heat or cold sensations, nor does it diagnose heat-cold types. Changes in consciousness, severe dehydration, difficulty breathing, and persistent high fever require immediate medical evaluation.

Official References

Medical staff who wrote and reviewed this article

Choi Yeon-seung

Chief Director of Baekrokdam Korean Medicine Clinic

The meaning of temperature regulation, the scope of differential diagnosis, and patient guidance expressions have been reviewed. The last review date was September 3, 2026.

Graduated from Kyung Hee University College of Korean Medicine
Providing Korean medicine treatment since 2010
Symptom treatment from the perspective of heat-cold balance and constitution

Check medical evaluation criteria for my symptoms View full profile

Check the guides where these terms are used

Symptom and Disease GuideAutonomic Dysfunction

Symptom and Disease GuideUpper-Heat Lower-Cold Syndrome

Heat and Cold ColumnReasons for feeling hot: Korean medicine treatment for when you cannot tolerate heat despite a normal body temperature

If your body always feels hot and you sweat a lot despite a normal body temperature, we categorize issues related to the thyroid, menopause, medication, and recovery capacity, and examine Korean herbal medicine and acupuncture treatments tailored to heat sensitivity and accompanying symptoms.

Heat and Cold ColumnReasons why the body feels cold, and Korean medicine treatment when coldness in the hands, feet, and abdomen is accompanied by fatigue

This explains how to distinguish the reasons for a cold body from thyroid issues, anemia, and Raynaud's phenomenon, and describes how Korean herbal medicine and acupuncture treatments vary when coldness in the hands, feet, and abdomen is accompanied by poor digestion, fatigue, or edema.

Medical GuideIf my face is hot and my feet are cold, is it Sangyeol-Hahan (upper heat, lower cold)?

Even if test results are normal, heat in the face and coldness in the feet and lower abdomen are real symptoms that can disrupt sleep, meals, and outings. In Korean medicine, this is viewed as a distribution of heat and cold known as Sangyeol-Hahan, and the treatment direction is determined based on the timing and sequence of upper and lower symptoms and their connection to sweating, throbbing, digestion, and sleep.

Medical GuideWhat should be checked when the entire body feels excessively hot or cold?

Sensitivity to heat or cold throughout the body can be caused by various factors, including the thyroid, medication, anemia, and menopause. If discomfort persists despite no major abnormalities in tests, we can determine the direction of Korean medicine treatment by analyzing systemic heat/cold tendencies along with sleep, digestion, sweat, and fatigue.

Comparison of similar terms

Korean Medicine ConceptHan-yeol

Cold-Heat (Han-yeol) is a criterion for dividing the body's current tendency by looking not only at feelings of cold or heat, but also accompanying patterns such as thirst, sweating, digestion, and sleep. It does not mean the same thing as a single thermometer reading.

Conditions requiring differential diagnosisAutonomic Nerves

The autonomic nervous system regulates sweat, heart rate, digestion, and the contraction and relaxation of blood vessels. While it may be related to feelings of heat or cold, a 'problem with the autonomic nervous system' cannot be confirmed by symptoms alone.

Symptom ExpressionFeeling of heat

A feeling of heat is a symptom where you feel warmth in areas such as the face, chest, palms, or soles, regardless of the reading on a thermometer. The affected area, timing, and accompanying changes, such as redness, sweating, or numbness, serve as clues to categorize the cause.

Symptom ExpressionCold Sensation

Cold sensation is a symptom where the hands, feet, abdomen, lower back, or the entire body feels cold and chilly. We examine accompanying patterns such as changes in skin color, numbness, differences between the left and right sides, and digestion or fatigue.