After car accident, have no external bruising but experiencing pain. deep tissue bruising? why does it itch? seat belt caused injuries.

Any rash associated: With itch?- ck with pcp! don't give up on set belts- they save lives.

Bruise, muscle pull: Itching often comes as a part of the healing process related to "cascade" releases of chemicals in the injured area. The initial response is inflammatory cells. As these transition to scar building cells, chemicals that get released trigger mast cells to release a small amount of Histamine. This can produce itching in a big enough release. Any cut, bruise, torn muscle, will produce inflammation.