Trauma refers to an injury of the skin and can be from many different causes.
Injuries can be superficial or can involve deep layers of the dermis and subcutaneous fascia, fat and muscle deep to the skin.
There are many causes for injury including sharp injuries, blunt injuries, burns, among many causes.
Trauma usually results in the formation of a bruise and often leads to formation of a wound on the skin. Treating the wound will depend on its size, depth and other characteristics.
For superficial cuts to the skin, ointments can help keep the injured skin or wound from drying out and can help speed the course of healing. This might possibly also improve the appearance of scars.
In cases where the cut is deeper, these wounds may need to be closed with stitches.