Final answer:
For a small, superficial wound left after excising a seborrheic wart, the best course of action is generally to apply a simple dressing and allow it to heal by secondary intention.
Step-by-step explanation:
For a 68 year old man who has had a seborrheic wart excised via curettage, leaving a superficial defect about 1cm in diameter, the best course of action would likely be application of a simple dressing. This approach is generally considered appropriate for shallow wounds that are not extensive and are expected to heal by secondary intention, which is the process of wound healing where the wound is left open to heal from the bottom up. A simple dressing would protect the area and facilitate a moist environment conducive to healing.
In certain circumstances, more complex treatments such as skin grafts or flaps may be necessary, especially if the wound is larger, deeper, or has failed to heal with conservative management. However, for a small superficial defect, these procedures may not be warranted initially. It is also important to monitor the wound for signs of infection such as increased redness, warmth, swelling, or purulent drainage which would require medical attention.