How is it different from cold hypersensitivity (cold hands and feet)?

Unlike cold hypersensitivity, where you only feel that your hands and feet are cold, Raynaud's phenomenon often involves distinct skin color changes following exposure to cold or stress.

When medical evaluation is necessary

If color changes persist for a long time, are severe on only one side, or are accompanied by wounds, severe pain, or loss of sensation, please visit a medical institution immediately for an evaluation.

In what order does the color change?

After exposure to cold or stress, fingers and toes may turn white, then blue, and then red as blood flow returns. Since not everyone follows the same sequence, recording photos and the duration of these changes will be helpful for your medical evaluation.

What should I be careful about in daily life?

It is important to reduce sudden exposure to cold, keep your entire body warm, and avoid smoking. If symptoms recur, it is necessary to check for medications you are taking and the possibility of other diseases; do not dismiss it as simply having a cold constitution.

How does the treatment for heat and cold imbalances proceed?

Based on the condition of the blood vessels and necessary medical evaluations, we examine the distribution of the cold sensation along with reactions to temperature changes, digestion, fatigue, and sleep. If you are receiving existing treatments, do not stop them arbitrarily; the possibility of concurrent treatment will be determined during the medical evaluation.

Raynaud's phenomenon is identified by the sequence of skin color changes after exposure to cold

Raynaud's phenomenon is a condition where small blood vessels in the fingers and toes contract excessively in response to cold or stress, causing the skin to turn white or blue, and then turn red or cause numbness and pain as blood flow returns. Not everyone experiences all three color changes.

Commonly confused terms and their differences: Cold hypersensitivity is a broad term for feeling that the hands and feet are cold, whereas Raynaud's phenomenon centers on episodic color changes and vascular reactions. It is categorized into primary, which occurs without an underlying disease, and secondary, which accompanies autoimmune diseases, medications, or occupational exposure; therefore, it is not explained solely by cold syndrome or blood deficiency.
Information to record before your visit: Take photos before, during, and after an episode under the same lighting, and record which finger changes color first, the specific color, the duration, and the exposure to cold or stress. You must also inform the medical staff if only one side is severe, if there is skin cracking, ulcers, joint pain, or rashes, as well as your smoking status, use of vibrating tools, and any medications you are taking.
Scope of this material: MedlinePlus data was applied to the skin color and pain changes of Raynaud's phenomenon and the scope of identifying underlying diseases. Do not diagnose based on photos alone or arbitrarily start or stop vascular medications. If the color of the hands and feet does not return, severe pain persists, or wounds, infection, or black discoloration occur, there is a risk of tissue damage, and you must seek medical evaluation immediately.

Official References

MedlinePlus: Raynaud's phenomenon color changes, numbness, and pain

Medical staff who wrote and reviewed this article

Choi Yeon-seung

Chief Director of Baekrokdam Korean Medicine Clinic

The meaning of Raynaud's phenomenon, the scope of differential diagnosis, and patient guidance expressions have been reviewed. The last review date was August 25, 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 GuideRaynaud's syndrome

Symptom and Disease GuideMy hands and feet feel cold

Heat and Cold ColumnCauses of Cold Hands and Feet: Korean Medicine Treatment Based on Skin Color Changes, Fatigue, and Digestive State

We categorize the causes of cold hands and feet into Raynaud's phenomenon, thyroid issues, and anemia, as well as Korean medicine perspectives such as lack of warmth and stagnation of Qi and blood, and explain herbal medicine and acupuncture treatments tailored to symptom combinations.

Heat and Cold ColumnCauses of cold fingertips, and Korean medicine treatment based on color changes, numbness, or neck pain

This distinguishes cold fingertips into Raynaud's phenomenon, nerve compression, or systemic coldness, and explains Korean herbal medicine and acupuncture treatments tailored to finger color changes, numbness, and neck and shoulder pain.

Medical GuideHow can I distinguish between hives, finger color changes, and coldness when exposed to cold?

Skin changes such as itching and swelling after cold exposure are considered cold urticaria; fingers and toes changing to pale, blue, or red are considered Raynaud's phenomenon; and a prolonged cold sensation without distinct skin changes is categorized under other types of cold sensations. Since these can overlap, photos and the sequence of occurrence must be reviewed together.

Medical GuideWhere should I start checking when sensations of heat and cold recur?

Even if there are no clear abnormalities in tests, recurring sensations of heat and cold are a definite discomfort. By gathering information on the area, time of day, duration, and accompanying changes such as sleep, sweat, and digestion, we can examine the branches of symptoms more precisely from the perspective of heat and cold and determine the direction of Korean medicine treatment.

Comparison of similar terms

Symptom ExpressionCold Hands and Feet

Cold hands and feet is a general term for the feeling of coldness and freezing in the extremities. It is not a diagnosis caused by a single factor; distinctions must be made between vascular, nerve, anemia, and thyroid issues.

Medical TerminologyDifferential Diagnosis

Differential diagnosis is the process of distinguishing possible causes one by one through examination, testing, and monitoring progress, rather than determining a disease name based on a single symptom. This is the first and most necessary step for both sensations of heat and cold.