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Thyroid hormone levels in panic disorder.

V K Yeragani1, J M Rainey, R Pohl

  • 1Department of Psychiatry, Wayne State University, School of Medicine, Detroit, MI.

Canadian Journal of Psychiatry. Revue Canadienne De Psychiatrie
|August 1, 1987
PubMed
Summary
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This study found no significant differences in average thyroid hormone levels (T3, T4, T7) between patients with panic attacks and healthy individuals. However, the distribution of these thyroid hormone values varied significantly between the groups.

Area of Science:

  • Endocrinology
  • Psychiatry
  • Neuroscience

Background:

  • Previous research suggests a link between thyroid dysfunction and phobic disorders.
  • A blunted thyroid-stimulating hormone (TSH) response to thyrotropin-releasing hormone (TRH) stimulation has been observed in panic disorder patients.

Purpose of the Study:

  • To compare thyroid hormone levels (T3, T4, T7) in patients experiencing panic attacks versus normal controls.
  • To investigate potential thyroid abnormalities in panic disorder, excluding individuals with pre-existing thyroid conditions.

Main Methods:

  • Compared serum T3, T4, and T7 levels in 26 patients with panic attacks and 20 healthy controls.
  • Patients met DSM-III criteria for panic disorder and had no history of thyroid dysfunction.
  • Blood samples were collected from participants not taking any medication.

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Main Results:

  • Mean T3, T4, and T7 levels did not significantly differ between panic attack patients and controls.
  • Indicates no evidence of hypothyroidism or hyperthyroidism in the panic disorder group.
  • Significantly different variances in the distribution of T3, T4, and T7 values were observed between the two groups (p < 0.05 for T3 and T7, p < 0.01 for T4).

Conclusions:

  • Panic disorder patients, without a history of thyroid dysfunction, do not exhibit altered mean thyroid hormone levels.
  • The variability in thyroid hormone distribution may represent a subtle endocrine difference in panic disorder.
  • Further research is needed to explore the implications of altered thyroid hormone variance in panic disorder.