Proper medical treatment is defined as having wounds treated and cleaned by an individual with Healing and Herbalism (Chemistry may be substituted for Herbalism) skills of at least intensity 1. Treatment by a Barbarian or Barbarian Shaman with field medicine also counts as proper medical attention. With continuous medical treatment (i.e. seeing a physician at least one per day), the rate of natural hit point recovery is doubled.
While scarring is still possible, the applicable saving throws are at +1 for every intensity of Healing and Herbalism possessed by the physician. Thus an injured character treated by a healer with Healing (2) and Herbalism (3) would be entitled to a system shock save at +5. For a Barbarian/Shaman's plusses, the rating is +1 per 10% in Treat Wounds.
Infection does not occur unless the physician fails his or her proficiency checks. In the event of a failure, the wounded character still may make a Body-Mind-Spirit roll to in attempt to resist infection.
In the event of a physician that has only Healing and not Herbalism, scarring is not affected, but rate of infection is. The system shock save is modified by -5 in this instance.