Assignment Problem:
"Jackson!" Virginia climbed up the stairs to look for her husband. It was so unlike him to be asleep at this time. He normally got up at 4 am to start his work on the farm. It got too hot late in the day. Now it was 6 am and she hadn't seen him yet. She opened the bedroom door, and saw Jackson sitting on the edge of the bed.
"Jackson," she said "what's wrong?"
Jackson looked up at her and pointed at his foot.
"Oh my goodness!" she exclaimed "No more excuses, we're going to the emergency room!"
Five days earlier, while at his work, Jackson had caught his foot in his manure spreader, sustaining a deep, crushing injury. Because of the manure, it was very dirty. Virginia had cleaned the wound as well as she could with soap and water, dressed it with clean gauze, and wrapped it tightly with an elastic bandage to stop the bleeding. The next day she redressed the wound and applied antibiotic ointment. Virginia had wanted Jackson to go to the emergency room. Jackson was diabetic and she was worried, but Jackson refused. They did not have health insurance, and he thought they could not afford to pay. She gave him ibuprofen for the pain, even though he said that the pain was not bad.
Virginia removed the bandages to take a look. His foot felt warm. She noticed Jackson winced when she touched the foot. He must be in so much pain. Jackson's foot was swollen, appeared bright red, and showed blue specks, and there were small pockets of pus.
Question 1: What do the redness, swelling, temperature, and pain in the foot indicate?
Question 2: What does the presence of pus indicate?
Question 3: Why is diabetes a risk factor that is possibly contributing to Jackson's predicament?