Background Erectile dysfunction (ED) is a common form of organic sexual dysfunction in males with diabetes, with estimated incidence rates between 35 and 75%. Fifty percent of men with diabetes are afflicted with ED within 10 years of their diagnosis. Long-term poor glycemic control increases the risk ED. Neuropathy is a major contributor to diabetic ED. Other causes of ED in diabetes include vascular disease, metabolic control, nutrition, endocrine disorders, psychogenic factors, and drugs.