Generalized vitiligo preceded by a generalized figurate erythematosquamous eruption

Area of Science:

• Dermatology
• Immunology
• Pathogenesis of skin diseases

Background:

• The exact cause of vitiligo, a depigmentation disorder, remains unclear.
• Investigating potential triggers and mechanisms is crucial for understanding vitiligo.
• Autoimmune factors are suspected in some cases of vitiligo.

Observation:

• A 77-year-old male patient presented with widespread, sharply demarcated, erythematosquamous plaques.
• Histological examination revealed lymphocytic infiltration of the lower epidermis in the lesions.
• These inflammatory lesions evolved into vitiliginous macules with a similar morphology.

Findings:

• The vitiliginous lesions showed a complete absence of active melanocytes.
• The patient's presentation suggests a transition from an inflammatory dermatosis to vitiligo.
• The histological findings support an inflammatory process preceding depigmentation.

Implications:

• This case provides evidence supporting an immunological pathogenesis for vitiligo.
• The findings highlight inflammatory vitiligo as a distinct clinical entity.
• Further research into immune mechanisms may lead to novel vitiligo treatments.