Skin erosion

Understanding Skin erosion

Skin erosion is described as pointing to internal disharmony, specifically the failure of fluids to be transformed properly so that they leak out through the skin.

Damp-Heat gives the classic picture: red swollen skin with oozing and vesicles, a thick greasy yellow coating, a heavy body and burning pain at the erosion. Spleen deficiency with dampness gives weeping lesions with pale skin around them, bloating, loose stools and fatigue.

Blood deficiency with external wind gives dry cracked erosions with little oozing, itch worse at night and a pale complexion. Qi and Blood stagnation gives dark red or purplish erosions with fixed stabbing pain and thickened rough skin around them.

A separate pattern is described for erosions on the genitals or lower limbs: Kidney and Liver Yin deficiency, with dry mouth, night sweats and low back soreness. The site matters because it changes the pattern.

The skin is treated as an outward face of the internal organs, fed by Blood and Qi and guarded by Wei Qi. An erosion therefore points to two failures at once: fluid metabolism has gone wrong, and the surface is no longer being fed. The Spleen is central to that account, because it turns food and drink into usable energy and moisture. When it is weak, fluid is not transported, dampness gathers and seeps through the skin as weeping erosions that close slowly. Mixed with heat, whether from food, stress or infection, the same erosion turns red, hot and angry.

Not every erosion is wet. When Blood or the deeper Yin is short, the surface loses its building material and goes dry, cracked and fragile, itching hard and healing badly because there is nothing to repair with. Stress adds a third route: frustration knots Liver Qi, Blood stops moving freely, and the erosion turns dark or purplish with fixed stabbing pain. The old literature describes soaking sores as wind heat from the Heart channel erupting on the skin, small at first, itching before they hurt, weeping fluid and spreading, which is close to a modern spreading oozing lesion.

How it connects

Skin erosion and atopic dermatitis frequently appear together because they share one root: a weak Spleen that cannot transform fluids, so dampness collects and surfaces as oozing lesions and itch. Strengthening the Spleen while clearing damp heat often settles both at once, which is why the erosion is rarely managed as a local problem alone. Where the erosion sits on long standing eczema, the dry and Blood deficient picture becomes more likely over time, and the plan shifts towards nourishing rather than draining.

How it is assessed

The practitioner assesses the erosion, its moisture and its site.

What a practitioner looks for

• Moisture: oozing with vesicles suggests Damp-Heat; dry cracked erosions suggest Blood deficiency.
• Surrounding skin: pale suggests Spleen deficiency; dark red or purplish suggests stagnation.
• Site: genital or lower limb erosions suggest Kidney and Liver Yin deficiency.
• Red flags: spreading redness with fever indicates infection and needs urgent care.

The practitioner starts with the lesion and works backwards. How it began, how it looks, what the ooze is like, whether vesicles are present and whether itch or pain dominates are the first clues, and so is the site, because genital and lower limb erosions follow a different route from those on the trunk. Acute, bright and wet suggests excess; chronic, pale and dry suggests deficiency; dark and thickened suggests stagnation. Each answer narrows the field before the tongue and pulse decide.

Bright red swelling with copious weeping, a feeling of heat, thirst and a bitter taste, a yellow greasy coating and a slippery rapid pulse confirm Damp-Heat. Pale, slightly oozing lesions with bloating and loose stools, a pale puffy tongue with a white greasy coat and a soft pulse confirm Spleen Deficiency with Dampness. Dry cracked erosions with night itch, rough scaly skin, a pale face, light headedness or brittle nails, a pale thin tongue and a thin pulse confirm Blood Deficiency with External Wind. Dark red or purple thick lesions with stubborn itch, a history of stress, menstrual irregularity or trauma, a dark purple tongue and a wiry or choppy pulse confirm Qi and Blood Stagnation. Genital or lower limb erosions with night sweats, tinnitus and low back soreness, a red tongue with little coating and a thin rapid pulse confirm Kidney and Liver Yin Deficiency.

TCM patterns in Skin erosion

Five patterns are described for skin erosion, and two questions sort them. The first is whether the erosion is wet or dry: weeping tissue that closes slowly points to dampness, while cracked itchy tissue points to a lack of Blood or Yin. The second is the site, because pale skin beside a weeping lesion belongs to the Spleen, dark thickened skin belongs to stagnation, and genital or lower limb erosions follow the Liver and Kidney. Wet lesions with bright redness, vesicles and burning pain are read as Damp-Heat. Pale oozing lesions with bloating, loose stools and fatigue are read as Spleen Deficiency with Dampness. Dry cracked lesions with night itch and a pale complexion are read as Blood Deficiency with External Wind. Dark red or purple lesions with fixed stabbing pain are read as Qi and Blood Stagnation. Drying a dry erosion is the mistake the classical literature warns about most often.

Treatment approach

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

Principles

• Drain dampness and clear heat while the erosion is oozing.
• Support the Spleen where the skin around is pale and digestion is weak.
• Nourish Blood and Yin where erosions are dry or recurrent.
• Treat infection first: spreading redness, warmth or pus needs medical care.
• Treatment is shaped by the pattern rather than by the lesion. While an erosion weeps, the priority is draining dampness and clearing heat. Where the surrounding skin is pale and digestion is poor, the Spleen is strengthened instead, since the weeping starts there. A dry erosion calls for nourishing Blood or Yin, a dark fixed one for moving Qi and Blood, and a genital or lower limb one for enriching Yin. The same wash is not used across all of them, and drying a dry erosion makes it worse.

Herbs used

Formulas

• Long Dan Xie Gan Tang
• Shen Ling Bai Zhu San
• Dang Gui Yin Zi
• Tao Hong Si Wu Tang
• Zuo Gui Yin

Acupoints

• LI-11 (Quchi)
• SP-9 (Yinlingquan)
• ST-36 (Zusanli)
• BL-20 (Pishu)
• SP-6 (Sanyinjiao)
• SP-10 (Xuehai)
• BL-17 (Geshu)
• LR-3 (Taichong)
• KI-3 (Taixi)
• BL-18 (Ganshu)

What to expect

• Superficial erosions are described as healing within one to two weeks with barrier care.
• Recurrent erosions need the underlying pattern and trigger treated.
• Scarring does not usually follow superficial erosion, unlike ulceration.
• Most plans combine weekly acupuncture with a daily formula and an external wash or ointment. Oozing and itch usually settle first, within one to two weeks, then the redness fades and the surface closes. Chronic erosions take longer, and the formula is adjusted as the pattern shifts from damp to dry, so progress is judged over weeks rather than days.

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 agents to broken skin without advice.
• Keep the area clean and covered as needed.
• Erosions on the genitals need medical review.

Using this alongside conventional care

• TCM is described as complementary to conventional care: prescribed topical treatment and antibiotics where indicated continue alongside herbs.
• Steroid creams, barrier ointments and medicated dressings are all compatible with herbs and acupuncture, and prescribed antibiotics where infection is present should be completed. Anyone taking immunosuppressants, anticoagulants or long term antibiotics should tell both practitioners, because Blood-moving herbs such as Dang Gui and Tao Ren can interact with blood thinners. Prescribed medication is never stopped abruptly, and any reduction is supervised by the prescriber.

Diet and lifestyle

• Avoid greasy, fried and heavily spiced food, alcohol and sugar, which are said to drive dampness and heat.
• Since dampness and heat drive most erosions, the base rule is to cut greasy, fried and heavily spiced food along with sugar, alcohol and excess dairy. Cold drinks and raw food weaken the Spleen and add to dampness, so warm cooked meals, cooked grains such as rice and millet, squash and a little lean protein are preferred. Dry erosions benefit from moistening additions such as pear, spinach and bone broth, while greasy food is still avoided because it recreates dampness even in a dry picture.

If you're pregnant

Pregnancy already increases dampness and heat, so erosions can become more active. The Damp-Heat picture is the usual one, but strong bitter cold herbs such as Huang Qin and Long Dan Cao, including those in Long Dan Xie Gan Tang, are considered too harsh in pregnancy and are avoided. Topical Ku Shen washes or calamine are preferred. Acupuncture is considered safe at points such as LI-11 Quchi and SP-9 Yinlingquan, while points that move Qi and Blood strongly, such as SP-6 Sanyinjiao and LI-4 Hegu, are avoided, particularly in the first trimester.

If you're breastfeeding

Herbs taken internally can reach the infant, so potent herbs that clear heat and drain dampness, Huang Qin and Long Dan Cao among them, are avoided because they may loosen the baby's stools. External washes are the safer first line. Where internal treatment is needed, gentle formulas such as Shen Ling Bai Zhu San are preferred where the Spleen is deficient. Acupuncture is a good option, and the baby's digestion and skin should be watched for any reaction.

If treating a child

In children, erosion usually appears within atopic dermatitis or nappy rash, most often as Damp-Heat or Spleen Deficiency with Dampness, because a child's Spleen is immature and dampness gathers easily. Doses run at one third to one half of the adult amount by age and weight, and children tolerate Shen Ling Bai Zhu San well. Herbal baths are often enough on their own, and assessment leans on observing the skin, feeding and stool rather than on what the child can describe.

If treating an elderly patient

In older people, erosion often follows Kidney and Liver Yin deficiency, so the skin is dry and fragile and breaks with minimal trauma, and healing is slower as Qi and Blood decline. Formulas such as Zuo Gui Yin nourish Yin and support repair, at about two thirds of the adult dose, and harsh drying or dispersing herbs are avoided. Acupuncture helps local circulation but needs gentle technique on fragile skin, and polypharmacy with possible herb and drug interactions deserves a careful review.

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 erosion or share its patterns.

Evidence

The evidence is indirect, drawn from atopic dermatitis. A Cochrane review found some individual trials showing benefit from herbal medicine while rating the overall evidence as limited by small samples and high risk of bias, a meta-analysis found herbal medicine improved atopic dermatitis symptoms with a favourable safety profile, and a further review found acupuncture reduced itching and lesion severity. Eroded skin also carries an infection risk that needs medical attention.

Direct research on erosion is sparse, so the evidence is borrowed from eczema. A Cochrane review from 2013 examined Chinese herbs in atopic eczema, found some individual trials in favour, and judged the overall evidence limited by small samples and high risk of bias. A 2013 meta analysis reported significant symptom improvement with a favourable safety profile, and a 2016 systematic review of acupuncture found reduced itch and lesion severity while asking for larger trials. Eroded skin also carries an infection risk that needs medical attention.

Studies often cited

Classical record