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Juvenile generalized pustular psoriasis in a pair of monozygotic twins presenting strikingly similar clinical courses
H Takematsu1, M Rokugo, K Takahashi
1Department of Dermatology, Tohoku University School of Medicine, Sendai, Japan.
Insights
This study details a rare case of juvenile generalized pustular psoriasis in identical twins who presented with similar symptoms and disease progression for seven years, unaffected by tonsillectomy.
Area of Science:
- Dermatology
- Genetics
- Pediatrics
Background:
- Generalized pustular psoriasis (GPP) is a rare, severe inflammatory skin condition.
- Juvenile-onset GPP is exceptionally uncommon, with limited understanding of its etiology.
- Monozygotic twins offer a unique model for studying genetic and environmental influences on disease.
Observation:
- A case of juvenile generalized pustular psoriasis (GPP) in monozygotic twins is presented.
- Both twins developed GPP simultaneously on the 48th day after birth.
- Strikingly similar clinical manifestations and disease course were observed for seven years.
Findings:
- Disease onset and progression were nearly identical in both genetically identical twins.
- Tonsillectomy in one twin at age 4 did not alter the frequency or severity of GPP attacks compared to the sibling.
- This suggests a strong genetic predisposition and limited impact of this specific intervention on GPP course.
Implications:
- Highlights the significant role of genetic factors in the pathogenesis of juvenile generalized pustular psoriasis.
- Underscores the potential for highly concordant disease expression in monozygotic twins.
- Suggests that certain interventions may not influence the natural history of GPP in genetically susceptible individuals.
Abstract:
We describe an exceptionally rare case of juvenile generalized pustular psoriasis noted in monozygotic twins who, after developing the disease on the same day (the 48th day after birth) continued to show strikingly similar clinical features of generalized pustular psoriasis for 7 years. Not even therapeutic intervention by tonsillectomy performed at age 4 years on one of the twins, which was expected to have some beneficial effect, could decrease the number of attacks or pustulation compared with the counterpart.