Bruce's friend Greg has been trying to support him throughout his journey. Greg is a 42-year-old IT- specialist, who suffers from Type II diabetes mellitus, which has been under control using an oral anti-hyperglycaemic medication and a reasonably healthy diet. Rather disturbingly, however, Greg has been experiencing numbness and some awkward tingling in his left foot recently.

Assuming that Greg's present symptoms are associated with his Type II diabetes mellitus, explain the link between:

 

 Type II diabetes mellitus and Greg's peripheral neuropathy.

 

 peripheral neuropathy and the potential for formation of leg ulcers.