here in my location self harm is defined as any behavior that is a deliberate attempt to harm the body to cope with an emotional or physical problem.

how does that translate to your question if your picking your scabs and scars are a deliberate , purposeful way that you cope with any of your physical or mental health problems then yes its called self harm, if its not a deliberate/ purposeful way that you handle your problems then no it isnt called self harm, here not doing it on purpose for handling problems in my location is called a habit, like sucking ones thumb or hair twirling, or tapping ones foot, or smoking, drinking habits.

my suggestion is talk with your treatment providers they will tell you if in your location what you are doing is called self harm and what you can do to better cope with your problems if it is called self harm in your location