Which are the symptoms of Henoch-Schönlein purpura?

Henoch-Schönlein purpura (HSP), now clinically known as IgA vasculitis, is primarily characterized by the classic tetrad of palpable purpura (a non-blanching rash), joint pain (arthralgia), abdominal pain, and renal involvement. Symptoms typically arise following an upper respiratory infection and can range from mild skin manifestations to severe systemic complications requiring urgent intervention.

What are the primary symptoms of Henoch-Schönlein purpura?

The clinical presentation of Henoch-Schönlein purpura varies, but the hallmark sign is a symmetrical, raised, reddish-purple rash known as palpable purpura, which most commonly appears on the lower extremities and buttocks. Beyond the skin, patients often experience:

• Joint involvement: Swelling and pain, particularly in the ankles and knees.


• Gastrointestinal distress: Colicky abdominal pain, nausea, or occasionally gastrointestinal bleeding.


• Renal symptoms: Hematuria (blood in urine) or proteinuria (protein in urine), which are the most critical indicators of long-term prognosis in Henoch-Schönlein purpura.

How do symptoms progress in Henoch-Schönlein purpura?

In the 106 members of the Henoch-Schönlein purpura community on DiseaseMaps.org, we see that the disease course is highly individual. While the rash is often the first sign, internal symptoms may develop days or weeks later. In most children, the condition is self-limiting and resolves within a month, but in a subset of patients, symptoms may recur or transition into a chronic phase, particularly regarding kidney function.

When should you seek immediate medical attention?

Families should be vigilant for signs indicating severe complications of Henoch-Schönlein purpura. Seek emergency care if you observe severe, persistent abdominal pain (which may indicate intussusception), significant blood in the stool, or signs of kidney distress such as dark, tea-colored urine or sudden swelling (edema) in the face or hands.

How does Henoch-Schönlein purpura impact daily life?

The unpredictability of Henoch-Schönlein purpura flares can be challenging for daily life, particularly due to joint pain that limits mobility and the need for frequent monitoring of kidney function. Managing the psychological impact of a chronic or relapsing condition is a key focus for our community members living with Henoch-Schönlein purpura.

Next steps

• Consult a pediatric rheumatologist or a nephrologist to monitor kidney function regularly.


• Keep a symptom diary to track the progression of the rash and any abdominal discomfort.


• Join the Henoch-Schönlein purpura community at DiseaseMaps.org to connect with others sharing similar experiences.

Medical disclaimer: This information is for educational purposes only and does not replace professional medical advice, diagnosis, or treatment.

References

• National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS/NIH)


• Orphanet: IgA vasculitis (ORPHA:3330)


• GARD (Genetic and Rare Diseases Information Center)


• Vasculitis Foundation