It will often be significant which area of the body is harmed in the dream.
The nervous system can develop ways of giving information without us being conscious of it.
This may give some indication of the area of life that is affected by the trauma.
To have an arm broken, for instance, might suggest that our ability to hold on is compromised.
If we see someone else who has been hurt or scarred we have probably been the ones who have hurt others in the past.
If this is so, there are various techniques we can use in the waking state to help us release others from the hurt we have inflicted.
The healing that subsequently takes place may then be recorded in further dreams by the loss of the scar.