A port wine stain is a capillary vascular malformation. While, cases of congenital port-wine stains (PWSs) are relatively common, cases of acquired PWSs are quite rare1 . Laser therapy is the current gold standard for treatment of PWS despite the fact that some patients are not adequately treated by this modality2 . Here, we report the successful improvement of a recalcitrant acquired port wine stain of the buttock using narrowband ultraviolet B phototherapy (NB-UVB).
A Common Treatment for a Rare Condition: Narrowband-Ultraviolet B (NB-UVB) Phototherapy for the Treatment of a Recalcitrant Acquired Port Wine Stain.