Small plaque parapsoriasis


parapsoriasis: one of a group of skin disorders that are characterized primarily by their resemblance to psoriasis (red, scaly lesions), rather than by their underlying etiology. Neoplasms can develop from parapsoriasis. For example, it can develop into cutaneous T-cell lymphoma.

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 L41.3, L41.4, L41.5
Hospital discharge: ICD-9 6962C
Hospital discharge: ICD-8 $!$
Cause of death: ICD-10 L41.3, L41.4, L41.5
Cause of death: ICD-9 6962C
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 4
First used in FinnGen datafreeze DF2

Summary Statistics

Key figures

All Female Male
Number of individuals 55 18 37
Unadjusted prevalence (%) 0.02 0.01 0.03
Mean age at first event (years) 59.15 57.61 59.90


Follow-up Absolute risk HR [95% CI] p N
1998–2019 - - - -
15 years - - - -
5 years - - - -
1 year - - - -

Age distribution of first events

Year distribution of first events

Cumulative Incidence


Index endpoint: L12_PARAPSO_PLAQUE – Small plaque parapsoriasis
GWS hits:

Survival analyses between endpoints


before Small plaque parapsoriasis
after Small plaque parapsoriasis

loading spinner Loading survival analyses plot

Drugs most likely to be purchased after Small plaque parapsoriasis