Linear and whorled nevoid hypermelanosis with dermatoscopic features

Area of Science:

• Dermatology
• Medical Genetics

Background:

• Linear and whorled nevoid hypermelanosis (LWNH) is an uncommon sporadic genodermatosis.
• It presents as hyperpigmented macules following Blaschko lines, often with reticulated, streaky, or whorled patterns.

Observation:

• A 33-year-old male patient presented with LWNH.
• No familial history of the condition was reported.
• Dermatoscopy revealed a distinct reticulated or net-like pattern.

Findings:

• The case confirms the clinical presentation of LWNH.
• Dermatoscopic findings provide a characteristic pattern for diagnosis.

Implications:

• This case adds to the literature on rare genodermatoses.
• Understanding the dermatoscopic features aids in diagnosing LWNH.
• Further research may elucidate the genetic underpinnings of LWNH.