<prompt> A child with erythematous non-blanching bosselated lesion on right side of the face, Rx isErbium laserNdYAG laserFlash light pumped dye laserQ ruby laser  <response>: Non blanching bosselated lesion on right side of the face suggests port wine stainTreatment of choice for port-wine stain is a yellow-pulsed dye laser often along with cryogen spray cooling. 