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A case of transient central hyperthyroidism.

Gholam Reza Pishdad1, Parisa Pishdad, Amaneh Sabzi

  • 1Department of Internal Medicine, Section of Endocrinology and Metabolism, Shiraz University of Medical Sciences, Shiraz, Iran. pishdadg@sums.ac.ir

Medical Science Monitor : International Medical Journal of Experimental and Clinical Research
|September 29, 2006
PubMed
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Long-term thionamide use for hyperthyroidism can lead to secondary hypothyroidism. Discontinuation may cause transient pituitary hyperthyroidism, a rare condition that resolves on its own.

Area of Science:

  • Endocrinology
  • Thyroidology

Background:

  • Thionamides are a primary treatment for hyperthyroidism.
  • Prolonged thionamide therapy can induce hypothyroidism.

Observation:

  • A case of transient pituitary hyperthyroidism after methimazole discontinuation is presented.
  • The patient experienced menstrual irregularities, hypothyroidism, and pituitary enlargement.
  • Thyrotoxicosis with elevated TSH and blunted TRH response was observed post-methimazole.

Findings:

  • Chronic hypothyroidism from thionamides can cause pituitary hyperplasia.
  • Transient thyrotrope dysfunction is a potential consequence of long-term thionamide treatment.

Implications:

  • This case highlights a rare complication of hyperthyroidism treatment.

Related Experiment Videos

  • Understanding thyrotrope dysfunction is crucial for managing endocrine disorders.