DOI: 10.12890/2017_000634

A Case of Hypocalcaemia Due to Vitamin D Deficiency in ‘Hikikomori’ Syndrome

Authors

  • Takahiro Miyakoshi Diabetes Center, Department of Neurology, Aizawa Hospital, Matsumoto
  • Mamoru Satoh Division of Clinical Mass Spectrometry, Chiba University Hospital, Chiba
  • Fumio Nomura Division of Clinical Mass Spectrometry, Chiba University Hospital, Chiba
  • Takao Hashimoto Department of Neurology, Aizawa Hospital, Matsumoto
  • Toru Aizawa Diabetes Center, Department of Neurology, Aizawa Hospital, Matsumoto

taizawa@amail.plala.or.jp

Keywords

Hikikomori syndrome, Hypocalcemia, Hypovitaminosis D

Abstract

Objective: To describe hypocalcaemia due to vitamin D deficiency in ‘hikikomori’ syndrome.

Materials and methods: A 37-year-old man with ‘hikikomori’ syndrome for a year was admitted with hypocalcaemia (serum ionic calcium 1.17 mmol/l). Serum 1,25(OH)2-vitamin D3 determined by liquid chromatography–tandem mass spectrometry was depressed at 12.1 pg/ml (29.0 pmol/l) and plasma intact PTH elevated at 324 ng/l. Administration of 1 ?g/day 1?(OH)-vitamin D3 and 1 g/day calcium lactate for 1 week normalized calcium and PTH, and raised 1,25(OH)2-vitamin D3 to low normal levels.

Conclusion: This is the first report of hypocalcaemia due to vitamin D deficiency in a patient with ‘hikikomori’ syndrome.

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References

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Published

2017-09-28

Issue

Vol. 4 No. 7 (2017)

How to Cite

1.
Miyakoshi T, Satoh M, Nomura F, Hashimoto T, Aizawa T. A Case of Hypocalcaemia Due to Vitamin D Deficiency in ‘Hikikomori’ Syndrome. EJCRIM [Internet]. 2017 Sep. 28 [cited 2026 Nov. 3];4(7). Available from: https://ejcrim.com/index.php/ejcrim/article/view/634

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