Skin lesions

Understanding Skin lesions

The tradition describes the skin as an extension of the internal organs, particularly the Blood, the Liver and the Spleen.

When Blood is overheated, by stress or spicy food, the heat is said to push outward and produce bright red, hot, itchy patches. When the Liver channel carries damp heat, the lesions tend to burn and ooze, often in the groin or inner thighs, and come with a bitter taste and irritability.

The dry picture is different: rough, flaky skin with itch that worsens at night, a pale complexion and brittle nails, read as Blood deficiency with external wind. Dull, pale lesions with little oozing and a bloated, tired digestion are read as Spleen deficiency with dampness.

Dark purplish or brown lesions with fixed stabbing pain are read as Qi and Blood stagnation. The classical literature treats that as the pattern behind lesions that have been present a long time and do not change.

The classical literature starts from the skin as a visible edge of the internal organs, which is why it reads a lesion before it names one. Blood is what keeps skin soft and supplied, so when it is heated the surface turns red and irritable, and when it is thin the surface dries and cracks. The Spleen is what keeps fluids moving, so a sluggish Spleen leaves them to pool and seep. The Liver, which stores Blood and keeps Qi in motion, explains why a rash can appear along one side of the body and why frustration makes it worse. None of these organs is being called damaged; the point is that the skin is where their work becomes visible.

A lesion also carries a history. What begins bright red and hot can dry into scaling as the heat uses up the Blood that should moisten the skin, and a patch that weeps can settle into a brown mark once the fluid clears. The classical literature reads those changes as movement between patterns rather than as a new disease, which is why the formula is revised as the skin changes. It also explains why two people with an identical-looking patch may be given quite different prescriptions: one is cooling an excess, the other is topping up a lack.

How it connects

Skin lesions rarely arrive alone, and the classical literature reads the company they keep as part of the pattern. Damp-heat in the Liver channel is described alongside herpes zoster and moist eczema, which are the same process seen in a named disease. Blood deficiency shows in the menstrual cycle as scanty, pale periods and in the nails as brittleness, while stagnation shows as painful periods with dark clots. A weak Spleen shows as bloating and loose stools, and long-standing irritation shows as a short temper and broken sleep. Because these run together, treating the pattern often eases several complaints at once.

How it is assessed

The practitioner reads colour, moisture and hardness, then asks what else is happening internally.

What a practitioner looks for

• Colour: bright red and hot suggests heat in the Blood; pale suggests Spleen deficiency; dark purple suggests stagnation.
• Moisture: oozing and blistering suggest Damp-Heat; dry and flaky suggests Blood deficiency.
• Behaviour: lesions that appear and disappear suggest wind; fixed lesions that do not change suggest stasis.
• Systemic signs: fever, confusion, or blistering and peeling skin need emergency assessment.

Colour and moisture are only the first pass. The practitioner then looks for the signs that belong to one pattern rather than another: a red tongue body with a thin yellow dry coat and a rapid, sometimes wiry pulse for heat in the Blood; a yellow greasy coat with a slippery, rapid pulse for damp-heat; a pale, thin, slightly dry tongue with a fine pulse for Blood deficiency; a pale swollen tongue with teeth marks, a white greasy coat and a soft, slow pulse for a weak Spleen; a purple tongue with dark spots and a choppy pulse for stagnation.

The behaviour of the lesion is read alongside the body. Patches that appear and vanish, or that move from place to place, are attributed to Wind, while a patch that stays exactly where it is and thickens is attributed to stasis. Where it sits matters too, because the Liver channel runs through the groin, the inner thighs and the sides of the chest, so oozing lesions there are read as damp-heat in that channel rather than as a general skin complaint. Itching that wakes the person at night is taken as a sign that Blood is failing to hold the surface.

TCM patterns in Skin lesions

Five patterns are set out here, and they are separated by three observations rather than by the name of a skin disease. The first is colour: bright red points to heat, pale lesions to a Spleen that is not moving fluids, and a dusky purple that has been present for months to blood that is not moving. The second is moisture: blistering and weeping mean dampness, while dryness, flaking and cracking mean the Blood is too thin to reach the surface. The third is what else is happening in the body, such as a bitter taste and a short temper with damp-heat in the Liver channel, bloating and loose stools with a weak Spleen, or periods that are scanty and pale with Blood deficiency and painful with clots in stagnation. The tongue and pulse settle the reading, and because lesions change as they heal, the pattern is reassessed rather than fixed.

Treatment approach

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

Principles

• Cool the Blood where lesions are bright red and hot.
• Drain damp heat where they burn and ooze, particularly along the Liver channel.
• Nourish Blood and settle Wind where the skin is dry and itchy at night.
• Move Blood and resolve stasis where lesions are dark, fixed and painful.
• The strategy is set by whether the problem is excess or deficient. Where heat or damp-heat is driving the eruption the aim is to clear and drain, and the formula is chosen for the channel involved; where Blood or Spleen is lacking the aim is to nourish and strengthen so that the surface is supplied again; where Blood is stuck the aim is to move it. External washes and ointments are often added to soothe the skin while the internal work continues, and because a lesion can move from heat towards dryness, the formula is revised as it does.

Herbs used

Formulas

• Xiao Feng San
• Long Dan Xie Gan Tang
• Dang Gui Yin Zi
• Shen Ling Bai Zhu San
• Xue Fu Zhu Yu Tang

Acupoints

• LI-11 (Quchi)
• SP-10 (Xuehai)
• DU-14 (Dazhui)
• LI-4 (Hegu)
• LR-3 (Taichong)
• LR-2 (Xingjian)
• SP-9 (Yinlingquan)
• SP-6 (Sanyinjiao)
• GB-20 (Fengchi)
• zhongwan-ren-12
• ST-36 (Zusanli)
• GB-21 (Jianjing)

What to expect

• Acute hot or damp lesions are described as improving within weeks.
• Dry and stagnant patterns take longer, and pigmentation may persist after the lesion settles.
• A lesion that changes, bleeds or grows needs dermatological review rather than herbal treatment.
• The classical literature gives rough timings: acutely hot and red lesions often settle within two to four weeks, lesions that have been dry or weeping for months usually need three to six months of rebuilding, and dark nodular patches soften over six to eight weeks. Formulas are taken every day while needling is usually weekly, and progress is judged by itch, sleep and the colour of the patch rather than by the calendar alone.

Safety and when to get help

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

Cautions

• Do not apply strong topical preparations to broken skin without advice.
• Persistent lesions should be medically diagnosed, not only treated.
• Long-term internal herbs should be supervised.

Using this alongside conventional care

• TCM is described as complementary to conventional care: prescribed topical treatment can continue alongside herbs, and any suspicious lesion needs dermatological assessment.
• Herbal treatment sits alongside dermatology rather than replacing it. Topical steroids, antihistamines and moisturisers can be continued, and the practitioner needs to know about all of them, because blood-moving herbs, Dang Gui and Chuan Xiong among them, may add to the effect of anticoagulants. Any steroid should be reduced slowly and only under the prescribing doctor's direction. Topical herbal applications are usually compatible with conventional creams, though they are best separated in time so that neither is washed off immediately.

Diet and lifestyle

• Avoid spicy, deep-fried and sugary food, alcohol and rich dairy, and favour cooked warm meals.
• The general rule is to remove what feeds heat and dampness and to add what the pattern lacks. Spicy, fried and sugary food, alcohol, coffee and rich dairy are the common fuels and are best reduced whatever the pattern. Beyond that the classical literature is specific: cooling foods such as cucumber, watermelon, mung beans and chrysanthemum tea for heat in the Blood; celery, mung beans, lightly cooked greens and cucumber for damp-heat; goji berries, black sesame, bone broth and dark leafy greens for Blood deficiency; congee, soups and stews for a weak Spleen; and turmeric, ginger, black fungus and a little lean red meat where Blood is stagnant.

If you're pregnant

Pregnancy tends to bring out the dry pattern. The growing fetus draws on the mother's Blood, so dry, scaly lesions with itching that wakes her at night can appear or worsen. Formula choice matters more than usual: strong blood-moving formulas such as Xue Fu Zhu Yu Tang are avoided outright because they can threaten the pregnancy, and bitter-cold herbs that drain damp-heat, Long Dan Cao among them, are used only with specialist supervision. Acupuncture, external washes and dietary adjustment are the usual first choices, with Sanyinjiao (SP-6) and Hegu (LI-4) both left out of the first trimester.

Where a formula is judged necessary, the classical literature prefers mild ones that cool the Blood gently and soothe the skin, Xiao Feng San among them, prescribed by a practitioner experienced in pregnancy care rather than chosen from a shop.

If you're breastfeeding

Herbs that are bitter and cold, the kind used to clear heat and dry dampness, can enter the milk, and a nursing baby may then pass looser stools or suffer colic. Formulas such as Long Dan Xie Gan Tang are therefore generally avoided while nursing, with milder heat-clearing options, needling and topical applications used instead. Acupuncture is considered safe during lactation and can address the dry pattern and the pale, oozing pattern without touching milk supply.

Ointments and washes that are not swallowed are a further option, and the practitioner should be told about nursing at the first visit so that the plan is built around it.

If treating a child

In children the two common pictures are a weak Spleen with dampness and an acute heat in the Blood. A child's digestion is described as immature, so fluids pool easily and surface as pale, mild rashes that keep returning, while bright red itchy lesions tend to follow a new food or exposure to wind. Doses are reduced to roughly a quarter to a half of the adult dose according to age and weight, and formulas such as Shen Ling Bai Zhu San, or a gentler Xiao Feng San, are adapted rather than given whole.

Needles are often difficult with young children, so paediatric tuina, acupressure and external washes are preferred, and the assessment relies on watching the lesion and the child's behaviour and on the parent's account of sleep and digestion.

If treating an elderly patient

In older patients the dry pattern and the weak Spleen pattern dominate, because ageing is described as depleting Blood and Yin, leaving skin thin and slow to hold moisture, and as weakening the digestive fire, so dampness collects and weeps. Doses are usually about two thirds of the adult dose to avoid burdening digestion, and interactions with the several medicines an older person may take need checking.

Acupuncture is often tolerated better than herbs and can carry the treatment, nourishing formulas such as Dang Gui Yin Zi suit this group, and timelines are longer because repair is slower.

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 skin lesions or share its patterns.

Evidence

The evidence is good for one lesion type. A sham-controlled randomised trial in 330 adults with chronic spontaneous urticaria found that active acupuncture produced significantly greater reductions in itch severity and wheal size than sham, with benefits persisting at follow-up. That is among the strongest single trials available for any skin presentation here, though it covers hives rather than lesions in general.

Studies often cited

Classical record