Hello!I am medical student AND i love that game so much.
How about "Physician" skill, connected with perception and intelligence.
1)Wounds stitching - Silk thread + Surgeon needle, rapidly refill hhp bar.
2)Herbal medecine - you now, some crapy potions from herbs. : D
And how addition - diseases!Some diseases from animals bites and cold or flu in winter. xD
sorry for my poor lang D: