Nevus depigmentosus following the Blaschko lines with the robustly activated mTOR pathway

Nevus depigmentosus: the analysis of 37 cases

BACKGROUND

Nevus depigmentosus (ND) is an uncommon congenital nonprogressive hypopigmented skin disorder that can be seen anywhere on the body. We considered other depigmenting disorders and focused on distinguishing ND from vitiligo and tuberous sclerosis complex in infancy.

METHODS

The diagnosis of patients with nevus depigmentosus was made differentiating it from nevus anemicus, pityriasis alba, tuberous sclerosis complex, vitiligo and other depigmenting disorders.

RESULTS

Of the 37 individuals with nevus depigmentosus evaluated, 36 were children, twenty-two (59.4%) were males and 15 (40.5%) were females, with male to female ratio 1.4:1.

CONCLUSIONS

Distinguishing ND from other disorders with depigmentation can be challenging, in particular in case of tuberous sclerosis complex and vitiligo in infancy.