A potential complication of diabetes is nerve damage (neuropathy). The most common type affects sensory nerves, leading to tingling or numbness in the extremities, particularly the feet.
The motor nerves (which help to control movement) may also be affected, leading to deformity (most often of the feet) or muscle wasting.
In some cases, nerves that regulate automatic body functions may be affected, leading to symptoms such as low blood pressure on standing, diarrhea, or erectile dysfunction