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Linear and whorled nevoid hypermelanosis: dermatoscopic features
Ilgen Ertam1, Bengu Gerceker Turk, Asli Urkmez
1Department of Dermatology, Ege University, Bornova, Izmir, Turkey. ilgen.ertam@ege.edu.tr
Journal of the American Academy of Dermatology
|January 20, 2009
Summary
Linear and whorled nevoid hypermelanosis (LWNH) is a rare pigmentation disorder. This case study details the unique dermatoscopic findings of LWNH, aiding in its diagnosis.
Area of Science:
- Dermatology
- Medical Genetics
Background:
- Linear and whorled nevoid hypermelanosis (LWNH) is a rare congenital pigmentation disorder.
- It is characterized by hyperpigmentation following the lines of Blaschko.
Observation:
- An 11-year-old girl presented with widespread hyperpigmentation in linear and whorled patterns.
- Physical examination and genetic analysis revealed no associated anomalies.
- Dermatologic examination showed whorled macules on the trunk and linear macules on the extremities.
Findings:
- Histopathology confirmed the diagnosis of LWNH.
- Dermatoscopy revealed characteristic streak-like pigmentations in linear or circular arrangements.
- This is the first report describing dermatoscopic findings in LWNH.
Implications:
- Dermatoscopy can be a valuable tool for diagnosing LWNH.
- It aids in differentiating LWNH from other melanotic lesions.
- Further research into dermatoscopic features of rare dermatoses is warranted.
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