Abrasions An abrasion is a superficial rub or wearing off of the skin, usually caused by a scrape or a "brush burn." Abrasions are usually minor injuries that can be treated at home. Blisters in Children Detailed information on blisters, including cause, first-aid, and treatment Bruises A bruise is a collection of blood underneath the skin that is caused by trauma to an area of the body. Sometimes, enough bleeding occurs so that a lump also forms. Lacerations Without Stitches A laceration is tear or opening in the skin caused by an injury. Some lacerations are small and need only minor treatment at home. Lacerations With Stitches Stitches, also called sutures, are special types of thread that hold the edges of a wound together while it heals. Puncture Wounds A puncture wound is a deep wound made by a sharp object. This type of wound may become infected easily because dirt and germs are carried deep into the tissues. Small Cuts and Scrapes Wash the cut area well with soap and water, but do not scrub the wound. A dirty cut or scrape that is not thoroughly cleaned can cause scarring. Splinters A splinter is a sharp sliver of wood, glass, or other debris that is lodged underneath the skin. Removal of small, superficial splinters can usually be done at home.