Laser treatment thread veins vascular lesions are abnormally large visible blood vessels situated close to the surface of the skin resulting in unwanted red colouration of the face and disfiguring of the legs a variety of conditions fall within the category of vascular lesions which can be treated by intense pulsed light ipl andor laser systems talangiectasia swollenbroken capillaries spider naevi port wine stains campbell de morgan spots rosacea permanent flushing to the face