Horror, Sleaze and Trash.

Lichtenberg figures are branching, tree-like patterns that are created by the passage of high voltage electrical discharges along the surface, or through, electrically insulating materials (dielectrics). The first Lichtenberg figures were actually 2-dimensional dust figures that formed when dust in the air settled on the surface of electrically-charged plates of resin in the laboratory of their discoverer, German physicist, Georg Christoph Lichtenberg (1742-1799).
Lichtenberg figures, sometimes called “lightning flowers” or “skin feathering”, often form beneath the skin of unfortunate humans who have been struck by lightning. The victim often has one or more reddish radiating feathery patterns that branch outward from the entry and exit points of the strike.