Allergic purpura


Henoch-Schoenlein purpura: A systemic, usually self-limited immune complex vasculitis, characterized by immunoglobulin A deposition in the small vessels and kidneys. It is manifested with small hemorrhages in the skin, gastrointestinal symptoms, arthritis, and nephropathy.

Endpoint definition

FinnGen phenotype data

321302 individuals

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Apply sex-specific rule None


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Check conditions None


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Filter registries

Hospital Discharge: ICD-10 D69.0
Hospital discharge: ICD-9 2870
Hospital discharge: ICD-8 2870
Cause of death: ICD-10 D69.0
Cause of death: ICD-9 2870
Cause of death: ICD-8 2870


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Check pre-conditions, main-only, mode, ICD version

Look only at ICD versions H.D: 10, 8, 9 ; C.O.D: 10, 8, 9


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Check minimum number of events None


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Include endpoints None


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Extra metadata

Level in the ICD hierarchy 4
First used in FinnGen datafreeze DF2
Parent code in ICD-10 D69
Name in latin Purpura allergica

Similar endpoints

List of similar endpoints to Allergic purpura based on the number of shared cases.

Venn diagram with an highlighted set fully inside another set Broader endpoints:

Venn diagram with a set fully inside an highlighted set Narrower endpoints:

Show all endpoint correlations

Summary Statistics

Key figures

All Female Male
Number of individuals 690 410 280
Unadjusted prevalence (%) 0.22 0.24 0.21
Mean age at first event (years) 39.07 36.82 42.36


Follow-up Absolute risk HR [95% CI] p N
1998–2019 0.09 7.20 [3.22, 16.07] 1.5e-6 76
15 years 0.02 2.91 [1.52, 5.57] 1.3e-3 23
5 years 0.01 7.75 [4.38, 13.70] 1.9e-12 22
1 year - - - -

Age distribution of first events

Year distribution of first events

Cumulative Incidence


Index endpoint: D3_ALLERGPURPURA – Allergic purpura
GWS hits: 0

Survival analyses between endpoints


before Allergic purpura
after Allergic purpura

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Drugs most likely to be purchased after Allergic purpura