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.

Data source
FinnGen phenocode L12_SEBORRHOEIC
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
DOID 8741
GWAS catalog 1000764
MESH D012628

Key figures

Sex All Female Male
Number of individuals 712 303 409
Unadjusted prevalence (%) 0.54 0.4 0.71
Mean age at first event (years) 51.89 49.7 53.51
Median number of events / individual 1 1 1

Clinical metrics

Sex All Female Male
Recurrence within 6 months (%) 24.86 23.43 25.92
Case fatality at 5-years (%) 3.23 0.99 4.89