Friction burn on the skin indicates that
Friction burn: Extensive, superficial, reddened excoriated area minimal or no linear mark Occurs when the skin is covered by clothing or the person is dragged on smooth surface (eg. on a marble floor) Brush burn: Graze abrasion involving wider area such as the back, caused by violent rubbing against a surface, as in dragging along over the ground. In an abrasion caused by a tangential force, the direction of the force can be determined by epidermal tags.
Person dragged on the road
Ligature crushing the epithelium
Cloth covering the skin
Pointed object passing across the skin
Mechanical Injuries