Diabetology is the branch of medicine that deals with the diagnosis and treatment of diabetes, both type I and II. Diabetology is considered a specialty in the branch of Endocrinology.
Sexual performance of about 50% of men and 25% of women suffers because of diabetes, it could either damage the nervous system in men, leading to diabetic neuropathy resulting in the damage of the erectile tissue. Diabetes makes women prone to acquiring bacterial infection that could be recurrent, causing painful sexual experience and an aversion towards the entire experience. It could also result in recurrence of the condition called cystitis and similar to erectile dysfunction in men, women might not be able to feel the stimulation in the clitoris due to Diabetes.
People who suffer from uncontrolled Diabetes for close to 3-5 years by now should start noticing the difference in their sexual performance. It is advisable to not blame age and other health issues for the decrease in your performance, and visit a specialist to be able to identify the condition.