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Infantile seborrheic dermatitis: seven-year follow-up and some prognostic criteria
S Menni1, R Piccinno, S Baietta
1Institute of First Department of Dermatology and Pediatric Dermatology, University of Milan, Italy.
Insights
Infantile seborrheic dermatitis (ISD) subtypes may predict future skin conditions. True seborrheic dermatitis (SD) cases evolved into more varied lesions, including atopic dermatitis, unlike psoriasiform seborrheic dermatitis (Psor SD).
Area of Science:
- Dermatology
- Pediatrics
- Clinical Research
Background:
- Infantile seborrheic dermatitis (ISD) presents with varied clinical features.
- Classification includes true seborrheic dermatitis (SD), psoriasiform seborrheic dermatitis (Psor SD), and erythrodermic seborrheic dermatitis.
- Understanding ISD evolution and long-term outcomes is crucial for pediatric dermatology.
Purpose of the Study:
- To investigate the long-term evolution of infantile seborrheic dermatitis (ISD).
- To evaluate the development of new skin lesions, atopy, or psoriasis in children with ISD.
- To determine if initial ISD features predict later dermatological conditions.
Main Methods:
- Retrospective review of medical records for 72 children diagnosed with ISD.
- Re-examination of patients to assess current skin lesions and diagnose new conditions.
- Analysis of family histories for predisposition to psoriasis or atopic dermatitis.
Main Results:
- Patients initially diagnosed with true seborrheic dermatitis (SD) developed a wider range of new skin lesions compared to those with psoriasiform seborrheic dermatitis (Psor SD).
- 15% of patients with initial SD developed atopic dermatitis; none with initial Psor SD developed atopic dermatitis.
- Psoriatic lesions appeared in similar proportions in both groups upon re-evaluation; family history was not a reliable predictor.
Conclusions:
- Initial clinical presentation of infantile seborrheic dermatitis (ISD) holds prognostic value.
- True seborrheic dermatitis (SD) and psoriasiform seborrheic dermatitis (Psor SD) appear to be distinct clinical entities.
- Early ISD classification may aid in predicting the likelihood of developing atopic dermatitis or psoriasis.
Abstract:
Based on clinical features, infantile seborrheic dermatitis (ISD) can be classified as follows: true seborrheic dermatitis (SD), psoriasiform seborrheic dermatitis (Psor SD), and erythrodermic seborrheic dermatitis. We reviewed the records of 72 children who had been affected by ISD several years earlier to investigate the evolution of disease, to evaluate the patients for the presence of new skin lesions, and to study family histories with respect to these conditions. In addition, we attempted to determine if there is any connection among the initial features of ISD and the types of skin lesions, and atopy or psoriasis. On reexamination, our patients previously diagnosed as having SD showed a larger variety of new skin lesions than those who had Psor SD, and 15% had developed atopic dermatitis. Atopic dermatitis was not present at follow-up in the children with previously diagnosed Psor SD. Psoriatic lesions were present in similar percentages in both groups at the time of reevaluation. Investigation of family history was not useful in predicting later development of psoriasis or atopic dermatitis. We conclude that the initial clinical features of ISD may be of prognostic value, and that SD and Psor SD are probably two different clinical entities.