Several years later Mr Hutchinson was in the Pharmacy with h…

Several years later Mr Hutchinson was in the Pharmacy with his wife, who was collecting her prescription. She asked whether there was something she could buy for her husband as she has noticed a problem with his foot and he cannot get a GP appointment for another 2 weeks. Mr Hutchison shows you his foot [a photograph of this can be found below].  What would be the most appropriate advice to give to Mr Hutchinson?