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Related Experiment Videos

Hypocalcemic hyper-CK-emia in hypoparathyroidism.

T Ishikawa1, H Inagaki, M Kanayama

  • 1Department of Pediatrics, Nagoya City University Medical School, Japan.

Brain & Development
|January 1, 1990
PubMed
Summary
This summary is machine-generated.

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Idiopathic hypoparathyroidism can cause hypocalcemia, leading to elevated creatine kinase (hyper-CK-emia). Correcting calcium levels normalized this condition, highlighting a link between calcium and muscle enzymes.

Area of Science:

  • Endocrinology
  • Neurology
  • Biochemistry

Background:

  • Idiopathic hypoparathyroidism (HP) is a rare endocrine disorder characterized by insufficient parathyroid hormone production.
  • Hypocalcemia, a common consequence of HP, can present with diverse clinical manifestations, including neurological and muscular symptoms.
  • Elevated serum creatine kinase (hyper-CK-emia) is typically associated with muscle damage, but its association with HP-induced hypocalcemia is less understood.

Observation:

  • A 15-year-old boy with idiopathic hypoparathyroidism presented with incidentally discovered hyper-CK-emia.
  • The patient exhibited mild hypocalcemia and a history of developmental delay and epilepsy, but no overt muscle weakness or abnormal electromyogram.
  • Neurological examination revealed normal deep tendon reflexes and muscle strength.

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Findings:

  • The hyper-CK-emia in this patient was directly linked to the underlying hypocalcemia caused by idiopathic hypoparathyroidism.
  • Normalization of serum calcium levels through treatment resulted in the resolution of hyper-CK-emia.
  • This case suggests that hypocalcemia, even when mild, can manifest as hyper-CK-emia without significant muscle pathology.

Implications:

  • This case underscores the importance of considering endocrine disorders like HP in the differential diagnosis of unexplained hyper-CK-emia.
  • It highlights the potential for hypocalcemia to cause biochemical abnormalities mimicking primary muscle diseases.
  • Further investigation into the spectrum of muscle dysfunction associated with hypocalcemic hyper-CK-emia in HP is warranted.