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Linear and Whorled Nevoid Hypermelanosis with Depigmentation
Preema Sinha1, Manas Chatterjee1, Kamlesh K Singh1
1Department of Dermatology, Military Hospital, Kirkee, Pune, India.
Indian Dermatology Online Journal
|April 14, 2017
Summary
Linear and whorled nevoid hypermelanosis (LWNH) is a rare pigmentation disorder. This case study reports the first instance of depigmentation within existing whorls of LWNH, observed in a familial case.
Area of Science:
- Dermatology
- Genetics
- Pigmentation Disorders
Background:
- Linear and whorled nevoid hypermelanosis (LWNH) is a rare genetic disorder of pigmentation.
- It presents as hyperpigmented macules in linear or whorled patterns, typically on the trunk and extremities.
- Palms, soles, and mucosae are usually unaffected.
Observation:
- This report details a rare familial case of LWNH.
- A unique observation in this case was the occurrence of depigmentation within the pre-existing hyperpigmented whorls.
- This depigmentation phenomenon within LWNH has not been previously documented.
Findings:
- The study documents a novel presentation of LWNH with secondary depigmentation.
- Familial occurrence suggests a potential genetic component influencing pigmentary changes.
- The specific pattern of depigmentation within whorls offers new insights into LWNH pathogenesis.
Implications:
- This finding expands the known clinical spectrum of LWNH.
- Understanding the mechanism of depigmentation could lead to new diagnostic or therapeutic approaches.
- Further research into familial LWNH cases is warranted to elucidate the genetic factors involved.