Abstract: Skin can be treated by penetrating an epidermis of the skin with a plurality of waveguides. Each waveguide has an end, which is positioned within a dermis of the skin. Electromagnetic radiation can be delivered through the plurality of waveguides to the dermis having a port wine stain for a time sufficient to selectively destroy a cutaneous blood vessel within the port wine stain. The time is less than a thermal diffusion time between the epidermis and the dermis to prevent forming substantial unwanted thermal injury within the epidermis.

Abstract: An apparatus can treat biological tissue using a base member, a plurality of needles, and a plurality of fiber optics. The plurality of needles extend from the base member. Each needle defines a bore capable of receiving a fiber optic and has an end. The plurality of needles form an array capable of penetrating a biological tissue and positioning each end within a subsurface volume of the biological tissue. Each fiber optic is adapted for insertion into the bore of each needle, and each fiber optic is capable of delivering electromagnetic radiation to the subsurface volume of the biological tissue to treat the biological tissue.