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Cranial mononeuropathy III - diabetic type

  • Definition

    Cranial mononeuropathy III -- diabetic type -- is usually a complication of diabetes that causes double vision and eyelid drooping.


    Alternative Names

    Diabetic third nerve palsy; Pupil-sparing third cranial nerve palsy


    Causes, incidence, and risk factors

    Cranial mononeuropathy III - diabetic type is a mononeuropathy, which means that only one nerve is damaged. It affects the third cranial (oculomotor) nerve, which is one of the cranial nerves that controls eye movement.

    This type of damage may occur along with diabetic peripheral neuropathy. It is due to damage to the small blood vessels that feed the nerve.

    Cranial mononeuropathy III is the most common cranial nerve disorder in people with diabetes.

    Causes may include:

    • Diabetes
    • Infarction of the nerve (tissue damage from loss of blood flow)
    • Mononeuritis multiplex