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What can be the cause of hypoglossal nerve palsy?
  1. Sibel Karşıdağ,
  2. Miruna Florentina Ateş
  1. Department of Neurology, School of Medicine, Maltepe University, Istanbul, Turkey
  1. Correspondence to Prof. M.D. Sibel Karşıdağ, Neurology, Maltepe University School of Medicine, Maltepe 34857, Turkey; karsidags{at}

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Clinical introduction

A middle-aged male patient with mild hypertension presented with thinning of half of his tongue and limitation in tongue movement that started 1 month ago. Neurological examination showed weakness and wasting on the left half of the tongue and a deviation to the left side, towards the outside of the mouth. The rest of the neurological examination was normal (figure 1).

Figure 1

Left deviation of the protruded tongue.


What is the most likely cause of hypoglossal nerve palsy?

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  • Twitter @sibel karsidag@dagkars

  • Contributors SK made the diagnosis and follow-up of the patient. MFA helped submit the case study.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Patient consent for publication Obtained.

  • Provenance and peer review Not commissioned; internally peer reviewed.