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Unusual presentation of more common disease/injury
An interesting case that included visual hallucinations in a patient with severe hypomagnesaemia and hypocalcaemia
  1. Andrea Wilkinson
  1. Endocrine/OP B Department, George Eliot Hospital, Nuneaton, UK
  1. Correspondence to Dr Andrea Wilkinson, afiscrase{at}


A 57-year-old man presenting with profound visual hallucinations was found to have severe hypomagnesaemia and hypocalcaemia with a normal level of parathyroid hormone (PTH). Magnesium is essential to the release of PTH so the suspected pathophysiology was thought to be: low Mg → inappropriately low PTH → low Ca. He commenced supplementation and his symptoms resolved. Causes of hypomagnesaemia are discussed.

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  • Competing interests None.

  • Patient consent Obtained.

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