Henoch Schonlein purpura

Understanding Henoch Schonlein purpura

The classical literature connects the skin and vessels to the Lungs, which govern defensive Qi and the pores, and to the Spleen, which keeps Blood in the vessels.

When a Wind-Heat pathogen follows a cold or sore throat, it can disturb the Lung function and agitate the Blood, so it leaks into the skin as purpura. That is the commonest sequence in children.

Heat victorious agitating the Blood gives high fever worse at night, dark red or purplish non-itchy purpura, bleeding from the nose, gums, stool or urine and restlessness. Wind-Heat gives itchy bright red purpura after an upper respiratory infection.

Damp-Heat in the channels adds swollen hot red joints with heavy aching, which is the joint component. Blood stagnation with heat gives dark patches with fixed stabbing pain. Qi not controlling Blood gives dull dusky purpura with profound fatigue and loose stools, and Empty-Heat from Yin deficiency gives recurrent dull red purpura with night sweats.

The classical literature frames purpura as Blood leaving its vessel. The Lung spreads defensive Qi across the surface and governs the pores, so an external pathogen that is not fully cleared can disturb that surface and agitate the Blood beneath it, which is why the rash so often follows a sore throat or a cold. The Spleen holds Blood inside the vessels, so when its Qi is weak the leak is slow and persistent rather than sudden. Between those two ends, Heat that reaches the Blood level makes Blood move recklessly, and Dampness that joins the Heat sinks into the joints.

What follows depends on depth and on the person. In an acute excess picture the spots are bright and spread quickly, and there may be fever, thirst, bleeding from the nose or gums, or blood in the urine and stool. In a deficiency picture the spots are dull and recurrent and come with fatigue, or with a mild afternoon fever and night sweats. The classical literature treats that distinction as the foundation of treatment, and it also notes that mixtures are common, so a child can present with Blood Heat sitting on a Spleen that cannot hold what is left.

How it connects

Henoch-Schonlein purpura rarely occurs in isolation: it is a systemic vasculitis that often involves the joints, gut and kidneys. In TCM the clustering is explained by shared pathogenic factors. When Heat invades the Blood level it can agitate blood in the skin, causing purpura, in the intestines, causing abdominal pain and bleeding, and in the joints, causing hot swollen arthralgia; the same Heat that drives blood out of vessels in the skin also disrupts the normal flow of Qi and Blood in the channels, producing pain. Damp-Heat is another common thread, pouring downward to cause blood in the stool or urine while settling into the joints to create painful obstruction. The Spleen's failure to manage Dampness often underlies these combined symptoms. Read that way, the clustering is a consequence of one pathology rather than several diseases: the Heat that drives Blood from the vessels of the skin also disturbs the even flow of Qi and Blood through the channels, which is why arthralgia arrives with the rash, and the same Damp-Heat that pours downward produces blood in stool or urine while settling into the joints. The classical literature therefore treats the skin, the gut and the joints as one picture, and watches the urine as the place where the process can continue quietly after the rash has gone.

How it is assessed

The practitioner assesses the purpura and, importantly, the abdominal and urinary symptoms.

What a practitioner looks for

• Onset: purpura after a sore throat in a child suggests Wind-Heat.
• Joint component: swollen hot joints suggest damp heat in the channels.
• Abdominal component: pain, vomiting or blood in the stool is urgent.
• Kidney component: blood in the urine or reduced urine output needs prompt assessment.

The examination begins with the rash: its colour, where it starts, how fast it spreads and whether it itches. The classical literature reads bright red spots that spread quickly after a cold as an exterior invasion, dark fixed spots that ache as stasis, and pale recurrent spots with fatigue as deficiency, then calls on the tongue and pulse to settle the question. Itching is a useful discriminator, because the Wind-Heat picture itches and comes and goes while the Blood Heat picture does not itch at all and instead brings thirst and a sense of heat that worsens at night.

The joint, gut and urinary findings are part of the same assessment rather than separate items. Swollen, hot, red joints with a heavy aching sensation point to Damp-Heat in the channels, and purpura appearing around the affected joints supports it. Dense, dark, painful patches that stay in one place, with a purplish tongue and a choppy pulse, point to stasis. Pale dusky spots with a weak pulse and no heat at all point to Qi not controlling Blood, and a less vivid rash with night sweats, dry mouth and a thin rapid pulse points to Empty-Heat from Yin deficiency.

TCM patterns in Henoch Schonlein purpura

Six patterns describe one process at different depths. The first question is how the spots look and behave: bright red, itchy and coming and going suggests Wind-Heat; deep red or purple, unitching and accompanied by bleeding from several sites suggests Heat victorious agitating Blood; dark patches that stay put and hurt when pressed suggest Blood Stagnation with Heat; and dull dusky spots that recur quietly suggest depletion. The second question is where else the process has landed, since swollen hot joints put Damp-Heat in the channels. The third is the state of the person, because profound fatigue with loose stools belongs to Qi not controlling Blood, while night sweats, five-palm heat and a low-grade afternoon fever belong to Empty-Heat from Yin deficiency. Tongue, pulse and the presence or absence of heat decide between them, and mixed pictures are treated in order of urgency.

Treatment approach

How the tradition treats henoch schonlein purpura, with the herbs, formulas and points used for it.

Principles

• Coordinate with medical care: HSP involves the kidneys and gut, and needs monitoring.
• Cool the Blood and resolve toxicity where purpura is bright and accompanied by fever and bleeding.
• Dispel Wind-Heat where the rash follows a respiratory infection.
• Support Qi and Yin in the recovery and recurrent phases.
• The order of work follows urgency: stop the bleeding and settle the rash while the purpura is active, then correct the imbalance that allowed it, cooling, dispersing and draining in excess patterns and strengthening the Spleen or nourishing Yin in deficiency ones. Because mixed pictures are common, a formula usually covers both the flare and the constitutional weakness.

Herbs used

Formulas

• Yin Qiao San
• Si Miao San
• Gui Pi Tang
• Zhi Bai Di Huang Wan

Acupoints

• SP-10 (Xuehai)
• LI-11 (Quchi)
• SP-6 (Sanyinjiao)
• LR-3 (Taichong)
• LI-4 (Hegu)
• SP-9 (Yinlingquan)
• GB-34 (Yanglingquan)
• ST-36 (Zusanli)
• qihai-ren-6
• KI-3 (Taixi)
• KI-6 (Zhaohai)
• BL-23 (Shenshu)

What to expect

• The rash usually settles over weeks, but kidney involvement can appear or persist later, which is why follow-up testing matters.
• Joint symptoms often settle faster than the rash.
• Recurrence is possible in the weeks after the illness.
• The classical literature sets a realistic pace: joints often ease before the skin does, the rash commonly fades over two to three weeks, and chronic deficiency patterns are measured in months rather than weeks. Treatment tapers once things stabilise, but the course is completed after the rash clears, since the underlying imbalance can persist and can trigger a further episode.

Safety and when to get help

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

Cautions

• HSP needs medical monitoring of urine and blood pressure, usually for weeks after the rash.
• Do not stop prescribed treatment without advice.
• A feverish rash in a child needs urgent assessment to exclude other causes.

Using this alongside conventional care

• This page is complementary: HSP is a systemic vasculitis requiring medical monitoring, and herbs are used only alongside that care and with medical agreement.
• Because the condition can involve the kidneys and the gut, coordination is not optional. Corticosteroids are never stopped abruptly; they are tapered with the prescribing doctor while the TCM practitioner monitors progress, and Blood-cooling herbs with mild anticoagulant effects are declared to the doctor when someone is on blood thinners. A full medication list belongs at the first consultation, and any change in urine colour, urine output or abdominal pain is reported to the medical team rather than managed with herbs alone.

Diet and lifestyle

• Avoid spicy, greasy and rich food, and favour cooling blood-nourishing food.
• The general rule is to take nothing that adds Heat or Dampness while the rash is active: spicy, greasy, deep-fried and rich food, shellfish, alcohol and caffeine are the usual list, and cooling, blood-nourishing food such as cucumber, mung beans, watermelon and greens takes their place. The classical literature adjusts this by pattern. In Heat victorious agitating Blood it adds lotus root and room-temperature water and stresses rest; in Wind-Heat, pears, chrysanthemum tea and mung bean soup; in Damp-Heat joint pain, barley water and lighter meals; in Blood Stagnation, celery and dark greens; in Qi not controlling Blood, warm soups, congees and stews with nothing raw or iced; and in Yin Deficiency, pear, lily bulb, black sesame and tofu, with late nights avoided because sleep is when Yin rebuilds.

If you're pregnant

This condition is rare in pregnancy but needs cautious handling. Blood-Heat and Wind-Heat patterns can still occur, and because pregnancy carries a risk of miscarriage, herbs that strongly move or aggressively cool the Blood are used with great care: the Blood-cooling cornerstone includes Mu Dan Pi and Chi Shao, both Blood-moving, so their doses are reduced and monitored. Acupuncture is the safer first line, gently at Quchi LI-11 and at Xuehai SP-10. The Qi not controlling Blood pattern may become more prominent as pregnancy taxes the mother's Qi, and Gui Pi Tang is relatively safe in experienced hands. Any formula containing Tao Ren or Hong Hua is avoided, and the obstetrician is kept informed.

If you're breastfeeding

Most of the cooling and Blood-stanching herbs used here, such as Mu Dan Pi and Sheng Di Huang, are considered safe in moderate doses during breastfeeding, but very bitter-cold herbs such as Huang Lian or Da Huang are avoided because they can pass into milk and cause diarrhoea in the infant. Gentler options for the Damp-Heat picture, such as Yi Yi Ren, are preferred. Acupuncture carries no known risk to milk supply or to the baby, and points such as Zusanli ST-36 and Sanyinjiao SP-6 support the mother's Spleen Qi and her recovery.

If treating a child

This is mainly a disease of childhood, with the highest incidence between the ages of three and ten, and Wind-Heat together with Heat victorious agitating Blood are the usual patterns, usually after an infection of the upper respiratory tract. The spots usually come up faster and cover more skin, and a child may be feverish and irritable. Doses are scaled by age, at between a half and two thirds of the adult amount for school-age children and a quarter to a third for toddlers, and formulas such as Yin Qiao San and the Blood-cooling cornerstone are prescribed by a practitioner used to children. Acupressure or paediatric tuina can replace needles, using Quchi (LI-11) with Xuehai (SP-10) to clear Heat.

If treating an elderly patient

The condition is uncommon in later life, and when it appears the picture shifts towards deficiency, with Empty-Heat from Yin Deficiency and Qi not controlling Blood more likely and purpura that is dull, chronic and recurrent rather than bright and acute. The tongue looks pale, or red with almost no coat, and the pulse is weak, so treatment favours gentle tonification and avoids harsh cold herbs that could damage an already weakened Spleen and Kidney. Doses run at about two thirds of the standard adult amount and the timeline is slower, with a medication review to catch interactions and care over needling in anyone on anticoagulants.

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 henoch schonlein purpura or share its patterns.

Evidence

Evidence consists mainly of case series, observational studies and many Chinese trials, with few high-quality English randomised trials. A systematic review of Chinese herbal medicine for HSP found that cooling-blood and wind-dispelling formulas, such as modifications of Xi Jiao Di Huang Tang, improved purpura resolution and reduced recurrence compared with conventional medication alone, though many studies had methodological limits. A 2015 Korean case series reported successful treatment in five patients. Kidney monitoring still governs management.

Two details from the literature are worth naming. The Korean series behind the case reports used a customised formula called Jing Rui Tang in five patients with Yin-deficiency disease, and recorded complete resolution of the purpura, the joint pain and the renal involvement with no recurrence during follow-up, which is a stronger result than most case series report and should be read as a single small series rather than as proof. The systematic review behind the cooling-Blood approach found improved resolution and fewer recurrences against conventional medication alone, while noting the methodological limits of the trials it pooled.

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.

• Traditional Chinese medicine versus regular therapy in Henoch-Schönlein purpura nephritis in children: study protocol for a randomized controlled trial.. Trials, 2019. PMID: 31464626.
• Chinese patent herbal medicine Huaiqihuang for Henoch-Schonlein purpura nephritis in children: a systematic review of randomized controlled trials.. BMC complementary medicine and therapies, 2021. PMID: 34743723.

Classical record