Seborrhoeic dermatitis

seborrheic dermatitis: A dermatitis that is an inflammatory skin condition resulting in flaky, white to yellowish scales on oily areas such as the scalp or inside the ear, which is caused due to a combination of an over production of skin oil and irritation from a yeast Malassezia furfur. The symptoms include itching, skin lesions and scales, redness, plaques and hair loss.

Endpoint definition

Long name Seborrhoeic dermatitis
Hospital Discharge registry ICD-10: L21, ICD-9: 690, ICD-8: 690|70630
Cause of Death registry ICD-10: L21, ICD-9: 690, ICD-8: 690|70630
Level in the ICD-hierarchy 3
First defined in version DF2
Latin name Eczema seborrhoicum

Summary Statistics

Key figures

All Female Male
Number of individuals 1253 535 718
Unadjusted prevalence (%) 0.58 0.44 0.76
Mean age at first event (years) 50.60 46.98 53.30
Case fatality at 5-years (%) 2.31 0.56 3.62

Longitudinal metrics

All Female Male
Median nb. of events per indiv. 1.0 1.0 1.0
Recurrence at 6 months (%) 25.94 26.17 25.77

Survival analyses between endpoints


before Seborrhoeic dermatitis
after Seborrhoeic dermatitis

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Drugs most likely to be purchased after Seborrhoeic dermatitis