Hypochromic vitiligo: delineation of a new entity

Area of Science:

• Dermatology
• Pigmentary disorders

Background:

• Hypochromic vitiligo is a rare condition with limited prior documentation.
• Previous reports used the term 'vitiligo minor' without clear diagnostic criteria.

Purpose of the Study:

• To define and delineate hypochromic vitiligo.
• To characterize the clinical presentation in a series of affected patients.

Main Methods:

• Retrospective multicentric evaluation.
• Study conducted across eight dermatology departments in Europe, Africa, and Asia.
• Analysis of 24 identified cases.

Main Results:

• Twenty-four cases of hypochromic vitiligo were identified (14 males, 10 females).
• All affected individuals had dark skin types (V and VI).
• Characteristic distribution involved the face, neck (predominantly seborrhoeic areas), and scalp with isolated hypopigmented macules.

Conclusions:

• Hypochromic vitiligo is not currently classified conventionally.
• The condition appears exclusive to individuals with dark skin.
• Distinctive presentation includes hypopigmented seborrhoeic facial/neck involvement and macules on the trunk and scalp.