A case report of a man in his 40s presenting with multiple verrucous (warty) plaques distributed along Blaschko lines on the left lower limb, present since birth and evolving from erythematous plaques.
The clinical presentation — congenital erythematous plaques on one limb gradually becoming verrucous, following Blaschko lines — is characteristic of a specific dermatological diagnosis, posed here as a diagnostic challenge.
Single case report with minimal clinical detail provided in the abstract; no histopathology, treatment outcomes, or follow-up data reported.
Verrucous or warty plaques following Blaschko lines on a limb, present since birth, should prompt consideration of mosaic/epidermal nevus disorders. Dermatoscopy and skin biopsy are key diagnostic steps.
