Alergic contact dermatitis


allergic contact dermatitis: An inflammatory skin condition caused by an immune response to direct contact between the skin and an allergen. It consists of a delayed type of allergic reaction at the affected site with resulting red, swollen, and blistered skin that may itch or leak.

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 L23
Hospital discharge: ICD-9 6920B|6921B|6922B|6924B|6924D|6924H|6924L|6925B|6925D|6926B|6926D
Hospital discharge: ICD-8 $!$
Cause of death: ICD-10 L23
Cause of death: ICD-9 6920B|6921B|6922B|6924B|6924D|6924H|6924L|6925B|6925D|6926B|6926D
Cause of death: ICD-8 $!$


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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 3
First used in FinnGen datafreeze DF2
Parent code in ICD-10 L20-L30
Name in latin Eczema (allergicum) ex contactu

Summary Statistics

Key figures

All Female Male
Number of individuals 3364 2632 732
Unadjusted prevalence (%) 1.09 1.52 0.54
Mean age at first event (years) 47.19 46.17 50.86


Follow-up Absolute risk HR [95% CI] p N
1998–2019 0.02 1.63 [1.06, 2.51] 2.6e-2 113
15 years 0.01 1.32 [0.88, 1.99] 1.8e-1 67
5 years 0.00 1.62 [0.98, 2.67] 6.1e-2 22
1 year - - - -

Age distribution of first events

Year distribution of first events

Cumulative Incidence


Index endpoint: L12_ALLERGICCONTACT – Alergic contact dermatitis
GWS hits: 0

Survival analyses between endpoints


before Alergic contact dermatitis
after Alergic contact dermatitis

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Drugs most likely to be purchased after Alergic contact dermatitis