A few months ago I woke up with some deep scratches across my back, I am unsure as to how it could have happened as there was nothing around me that could have caused it, unless I did it in my sleep. The scratches have still not faded very much and I was wondering if there was anything available that could help the healing process, or whether there is anything I can personally do to help it. Also if possible an explanation as to how it could have happened.