Autonomic neuropathy: its diagnosis and prognosis

Area of Science:

• Endocrinology
• Neurology
• Diabetology

Background:

• Diabetic autonomic neuropathy (DAN) is a significant complication of diabetes mellitus.
• Autonomic control extends to all bodily functions, and DAN can manifest subtly or severely.
• Previous notions of 'patchy' or binary (present/absent) neuropathy are outdated.

Purpose of the Study:

• To highlight the clinical implications of autonomic damage in diabetic patients.
• To emphasize the need for awareness regarding diagnosis, management, and prognosis of DAN.
• To underscore the potential for future research to reverse or prevent DAN.

Main Methods:

• Utilized simple cardiovascular reflex tests to detect autonomic abnormalities.
• Reviewed the pathophysiology of nerve damage in diabetes, affecting both autonomic and somatic components.
• Integrated understanding of neuropeptides and hormones in autonomic control.

Main Results:

• Autonomic abnormalities can be detected via reflex tests even without symptoms.
• Severe nerve damage leads to symptomatic DAN with a poor prognosis.
• DAN causes widespread abnormalities, some detectable, some yet undiscovered.

Conclusions:

• Physicians must recognize the clinical relevance of DAN in diabetes care, including foot care, symptom recognition, and management of complications.
• Awareness of risks, such as during general anesthesia and potential sudden deaths, is vital.
• Further research into pathophysiology, neuropeptides, and interventions like improved glycemic control and aldose reductase inhibitors may offer future prevention or reversal.