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Acute hyposmia in type 2 diabetes
1Social Insurance Uguisudani Health Care Centre, Department of Internal Medicine, Hospital of the Imperial Household, Tokyo, Japan. s-taka@ceres.dti.ne.jp
The Journal of International Medical Research
|November 1, 2003
Summary
A type 2 diabetes patient experienced sudden smell loss (hyposmia) due to potential diabetic neuropathy. Symptoms resolved spontaneously, suggesting cranial nerve involvement in diabetic olfactory dysfunction.
Area of Science:
- Neurology
- Endocrinology
- Ophthalmology
Background:
- Type 2 diabetes management can involve dietary changes.
- Diabetic neuropathy can affect cranial nerves.
Observation:
- A 61-year-old man with type 2 diabetes developed sudden hyposmia during diet treatment.
- Investigations ruled out neurological, nasal, and sinus pathologies.
- An intravenous olfaction test indicated neural hyposmia.
Findings:
- Hyposmia symptoms and olfactory test results normalized within 6 months without medication.
- The clinical course resembled diabetic neuropathy of cranial nerves III and VI.
Implications:
- This case suggests diabetic mononeuropathy of the first cranial nerve may cause olfactory dysfunction.
- Further research into diabetic olfactory dysfunction and cranial nerve involvement is warranted.