A 73-year-old man had been attending the diabetes clinic for 6 weeks with an ulcer on his right second metatarsal head. He had been receiving regular podiatry and offloading.
What new feature in the appearance of his foot is most likely to suggest the need to start antibiotics?
A . increase in ulcer size
B . pain around ulcer
C . skin redness around ulcer
D . tracking sinus
E . ulcer probing to bone
Answer: C