Chilblains

Understanding Chilblains

Note a source collision recorded rather than resolved: this page and the Frostbite page both carry the Chinese name 冻疮 (dòng chuāng). This page describes the superficial, recurring form.

The tradition describes chilblains as cold causing blood to congeal in the tiny vessels of the hands and feet, with the underlying issue a deficiency of Yang that fails to warm the limbs and repel cold.

Blood stagnation gives fixed stabbing pain with purple or dusky swelling, cold and numb extremities, worse with cold and better with warmth, without ulceration. Qi deficiency causing Blood stagnation gives aching cold pain with lesions that heal slowly, marked fatigue and breathlessness.

Yang deficiency with cold-damp gives icy hands and feet that are hard to warm, deep heavy aching in bones and joints, a cold sore lower back, a pale puffy face and mental fog. Blood stagnation with heat describes the lesion that has become red, hot and ulcerated with pus and fever, which needs medical attention.

The mechanism is easier to picture as a heating problem. A healthy body keeps the hands and feet at an even temperature by pushing warm Blood out to the surface, and the Spleen supplies the Qi and Blood that make this possible while the Kidney holds the Yang that keeps the whole system alight. When either is short, the periphery is the first place to lose its supply, so a cold morning that barely registers for one person leaves another with stiff, pale, aching toes. The same external cold then meets an interior that cannot answer it.

That is why two people can walk the same distance in the same weather and only one comes home with lesions. The person whose internal weather is already cold begins the exposure with vessels half closed and Qi too weak to push Blood through them, while the person with Yang intact simply warms up again. Reading chilblains this way turns a seasonal nuisance into a signal about the body's reserves, which is why a practitioner asks about energy, digestion, sleep and cold tolerance rather than about the toes alone.

There is also a turning point to watch for. Blood that has pooled for long enough stops being simply cold and still, and begins to generate Heat, in the way a jammed log pile can begin to smoulder. The lesion that was purple and numb becomes red, hot and swollen and may eventually discharge pus, and with it come thirst, feverishness and irritability. That change matters because the treatment reverses: warming herbs suited to the earlier stages would add fuel to an infected lesion, so the formula shifts towards clearing Heat and resolving toxicity while still moving Blood.

How it is assessed

The practitioner looks at the colour of the lesions and the person constitutional warmth.

What a practitioner looks for

• Lesion colour: purple dusky swelling suggests stagnation; icy pale skin suggests Yang deficiency.
• Healing: slow-healing lesions with fatigue suggest Qi deficiency.
• Constitutional signs: cold sore lower back, puffy face and foggy head suggest Yang deficiency with cold-damp.
• Infection: red hot ulcerated lesions with pus and fever need medical assessment.

A practitioner reads a chilblain in a set order. First comes the colour and temperature of the skin: bluish or purplish patches that feel cold and hurt sharply on pressure, with a tongue that is pale or carries purple spots and a pulse that is deep and wiry, describe Blood Stagnation. Second comes the person's stamina and healing speed: when numbness and swelling arrive with breathlessness on mild exertion, a pale face and lesions that take weeks to close, the pulse is weak and thready and the tongue pale and slightly dusky, and the reading is Qi Deficiency causing Blood Stagnation.

If the chill runs past the extremities, so that the whole body feels icy, the chills sit deep, the lower back aches and the mind is foggy, the practitioner expects a pale, puffy tongue and a pulse that feels deep, slow and faint, and treats the picture as Yang Deficiency with Cold-Damp. The distinction matters because the same purple lesion is being driven by a much deeper lack of fire, and the answer is moxibustion and a hot formula rather than a mild warming one.

The last question is whether the lesion has turned. Redness, heat, swelling, throbbing pain and any discharge of pus, together with thirst and a restless, feverish feeling, a red or purple-red tongue with a dry yellow coat and a rapid choppy pulse, mark the shift to Blood Stagnation with Heat. Infection is checked for directly at this stage, since it needs medical assessment as well as herbs, and the practitioner will ask whether the lesion has been scratched, rubbed or exposed to strong heat.

TCM patterns in Chilblains

Chilblains look much alike on the surface, so differentiation turns on what the skin does and on what the rest of the body is doing. Colour comes first: a dusky purple patch that feels cold and hurts sharply when pressed points to Blood Stagnation, where cold has congealed Blood in the vessels of the extremities. Healing speed comes second: when lesions reopen, close slowly and leave the person tired and short of breath on the stairs, Qi is too weak to push Blood along, which is Qi Deficiency causing Blood Stagnation. Temperature comes third: when hands and feet stay icy long after coming indoors, the lower back aches with cold and the face looks puffy, the lack has reached the Kidney's warming fire and the pattern is Yang Deficiency with Cold-Damp. Finally, a lesion that turns red, hot, swollen and discharging has had Heat added to the stasis.

Treatment approach

How the tradition treats chilblains, with the herbs, formulas and points used for it.

Principles

• Warm the Yang and move Blood, which is the core of treatment for chilblains.
• Dispel cold-damp where the limbs feel heavy and the face looks puffy.
• Clear heat where a lesion has become hot, ulcerated and infected.
• Keep the extremities warm and dry, and avoid smoking.
• Behind every protocol sits one strategy: open the vessels and drive out cold, then decide whether the problem is excess stasis or an underlying deficiency. The branch is the lesion, which wants warmth, movement and protection, while the root is the constitutional lack of Qi, Yang or Blood, and only the root determines whether a warming formula such as Dang Gui Si Ni Tang, a Qi-building formula such as Bu Yang Huan Wu Tang, or a cooling and detoxifying formula such as Si Miao Yong An Tang is chosen.

Herbs used

Formulas

• Dang Gui Si Ni Tang
• Bu Yang Huan Wu Tang
• Si Ni Jia Ren Shen Tang
• Si Miao Yong An Tang

Acupoints

• SP-10 (Xuehai)
• LI-4 (Hegu)
• ST-36 (Zusanli)
• DU-4 (Mingmen)
• SP-6 (Sanyinjiao)
• DU-14 (Dazhui)
• LI-11 (Quchi)
• LR-3 (Taichong)

What to expect

• Lesions are described as settling within two to four weeks with warmth and treatment.
• Recurrence each winter is expected unless the Yang deficiency is addressed.
• Ulcerated or infected lesions need medical review.
• Expect the first winter to be the treatment period and the second to be the test. Acute lesions usually settle in a fortnight of daily herbs and moxibustion, but recurrent cases need three to six months to rebuild Qi and Yang, and progress is measured by fewer fresh lesions, quicker closure and milder symptoms rather than by the fading of old scars. Once the pattern has been corrected, many people need only a short course each autumn as the cold returns.

Safety and when to get help

For anything severe, sudden or spreading quickly, read when a skin problem needs urgent care.

Cautions

• Do not rub or apply strong heat directly to cold numb skin.
• People with diabetes or circulation disease need prompt review.
• Avoid smoking, which worsens vasoconstriction.

Using this alongside conventional care

• TCM is described as complementary to conventional care: prescribed vascular treatment continues, and infected lesions need medical care.
• Nifedipine and corticosteroid creams can be continued alongside herbs, but because some formulas also improve circulation, ask your prescriber to watch for flushing, headache or dizziness when the two are combined. Blood-moving herbs such as Dang Gui and Chuan Xiong may add to the effect of warfarin or aspirin, so both practitioners need the full medication list, and prescribed drugs should never be stopped abruptly. Keep the lesion clean and unbroken, tell your TCM practitioner if the skin has cracked, and keep moxibustion away from any area that is warm, red or weeping.

Diet and lifestyle

• Favour warm cooked food, soups, stews and warming spices, and avoid cold drinks and raw food.
• The general principle is to keep the interior warm and the fluids moving: soups, stews and ginger congee, lamb, chicken, walnuts, and slow-cooked greens, with warming spices such as cinnamon, clove and black pepper, while raw salads, iced drinks, ice cream and heavy dairy are reduced because they add cold and Dampness. Beyond that, the pattern decides the details: ginger and cinnamon tea with lamb and Dang Gui suits Blood Stagnation; slow-cooked beef or chicken with root vegetables suits Qi Deficiency; lamb, ginger and cinnamon with the lower back kept warm suits Yang Deficiency; and once a lesion is hot and red, cooling foods such as cucumber, watermelon and mung beans replace the warming spices until the Heat settles.

If you're pregnant

Pregnancy tends to shift chilblains towards Qi and Blood deficiency as the fetus draws on the mother's resources, and simple Blood stagnation or Yang deficiency patterns may deepen into a combined deficiency-stagnation picture, so lesions heal more slowly.

Blood-moving herbs such as Chuan Xiong, Hong Hua and Tao Ren are typically avoided because they may trigger contractions, while gentle warming external therapies such as moxibustion or topical ginger soaks are safer, and acupuncture can be used with careful point selection, avoiding points known to stimulate the uterus.

If you're breastfeeding

During breastfeeding the concern is that herbs passing into milk may affect the infant. Most warming herbs such as Dang Gui and Gui Zhi are considered safe, but potent blood movers such as Hong Hua are best avoided unless prescribed by an experienced practitioner.

For Blood stagnation with Heat, herbs such as Jin Yin Hua and Xuan Shen are unlikely to harm the baby and can be used if needed. Topical creams, moxibustion and acupuncture are preferred during this period because they carry virtually no risk to the nursing infant.

If treating a child

Chilblains are quite common in children, especially in damp cold climates, and children's Yang Qi is still developing, which makes them more susceptible to Cold invasion and Blood stagnation. The usual pattern is simple Blood stagnation without the deeper Yang deficiency seen in adults, with lesions on toes, fingers and ears.

Doses are reduced to about half to two-thirds of the adult dose by age and weight, and moxibustion and warm soaks are very effective and well tolerated. Parents should be warned never to rub or massage a chilblain vigorously, since that can damage fragile skin; gentle warming is key.

If treating an elderly patient

In older people chilblains are almost always rooted in Yang deficiency with Cold-Damp or Qi deficiency causing Blood stagnation, as the body's warming and circulating functions weaken with age and the extremities become vulnerable to even mild cold. Lesions heal more slowly and may be complicated by fragile skin and poor wound healing.

Doses start at about two-thirds of the standard adult dose and are adjusted carefully, and because many older patients take blood thinners, strongly blood-invigorating herbs such as Dan Shen need caution. Moxibustion on Mingmen (DU-4) and Zusanli (ST-36) warms Yang and promotes circulation gently without systemic side effects.

Urgent-sign guidance is based on standard sources: NHS anaphylaxis, NHS cellulitis, NHS Stevens-Johnson syndrome, NHS melanoma.

Related conditions

Conditions that often coexist with chilblains or share its patterns.

Evidence

Evidence is limited: small Chinese studies and case series. A few randomised trials of oral formulas such as Dang Gui Si Ni Tang and of topical preparations report faster healing and symptom relief, but blinding and placebo controls are usually absent. Moxibustion and acupuncture have been studied for cold-induced vascular conditions, with some evidence for improved microcirculation and reduced pain.

What is published is small in scale and largely in Chinese. A few randomised trials have looked at oral formulas such as Dang Gui Si Ni Tang and at topical herbal preparations, reporting shorter healing times and better symptom relief, while case series describe moxibustion and acupuncture improving microcirculation and reducing pain in cold-induced vascular problems. Methodological quality is modest, with little blinding and few placebo controls, so these findings support a long traditional use without proving it. The honest position is that larger and better-designed trials are needed before chilblains can be called an evidence-supported indication.

Studies often cited

PubMed records for the TCM evidence

Real PubMed records for the TCM clinical evidence discussed above, selected by condition name and title relevance. They are references, not proof of benefit.

• Chilblains.. VASA. Zeitschrift fur Gefasskrankheiten, 2020. PMID: 31808732.

Classical record