From the Guidelines
Thyroid disorders have a significant psychosocial impact, and routine screening for thyroid disorders is recommended when treating patients with anxiety disorders. The comorbidity between anxiety disorders and thyroid disorders is substantial, with half of the studies supporting the notion of subclinical thyroid dysfunction in patients with anxiety disorders 1. This suggests that anxiety and thyroid dysfunction may partly emanate from shared etiopathogenetic factors, such as stress.
Psychosocial Impact of Thyroid Disorders
The psychosocial impact of thyroid disorders is multifaceted, affecting patients' quality of life, work performance, and social relationships. Both hypothyroidism and hyperthyroidism are associated with increased rates of anxiety, depression, cognitive dysfunction, and reduced quality of life. In hypothyroidism, patients commonly experience fatigue, low mood, cognitive slowing, and memory problems that can impair work performance and social relationships.
Treatment and Management
Levothyroxine treatment often improves these symptoms, though some patients report persistent psychological effects despite biochemical normalization. Hyperthyroidism presents with anxiety, irritability, emotional lability, and concentration difficulties that can strain relationships and workplace functioning. Treatment with anti-thyroid medications, radioactive iodine, or surgery addresses these issues, but patients may experience adjustment difficulties during treatment transitions.
Recommendations for Healthcare Providers
Healthcare providers should implement routine psychological screening using tools like PHQ-9 or GAD-7, provide comprehensive education about the psychological aspects of thyroid disease, and consider referrals to mental health professionals when needed. Multidisciplinary care addressing both physiological and psychological aspects of thyroid disorders is essential for optimal patient outcomes and quality of life. The use of laboratory challenges mimicking real-life psychosocial stress, such as the Trier Social Stress Test, may prove an intriguing alternative to pharmacologically probing the HPT axis with standardized doses of exogenous TRH 1.
Future Research Directions
Longitudinal epidemiological research is necessary to delineate the temporal order in which anxiety and (subclinical) thyroid disorders evolve over the course of development. Combining these approaches should allow for further progress to be made in unraveling the extent and meaning of thyroid dysfunction in anxiety disorders. Case-control designs including patients with different forms of anxiety and depression, and potentially other stress-related disorders presenting with bodily symptoms, seem particularly promising in this respect 1.
From the Research
Psychosocial Impact of Thyroid Disorders
- Thyroid disorders can have a significant psychosocial impact on patients, including contributing to distress, worry, worse quality of life, and in some cases, anxiety and depression 2.
- A thyroid cancer diagnosis and its downstream management can impact patients in a variety of ways, including contributing to distress, worry, worse quality of life, and in some cases, anxiety and depression 2.
- Racial/ethnic minorities, those with lower education, women, adolescents/young adults, and individuals with a prior mental health conditions are at greater risks for adverse psychosocial effects from their thyroid cancer diagnosis and management 2.
Psychological Distress in Thyroid Cancer Patients
- About 20% of patients with thyroid cancer have psychological distress before surgery, which can lead to poor clinical outcomes 3.
- Psychological nursing intervention can alleviate the psychological distress of patients with thyroid cancer and improve their quality of life 3.
- The emotional disorders in patients with thyroid cancer can be detected with the Chinese version of Profile of Mood States-Brief, and the patients' life quality can be evaluated with the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Core Questionnaire (QLQ-C30, version 3.0) 3.
Association Between Thyrotropin and Depression
- Thyroid dysfunction is associated with an increase in the odds of depression, with both low and high TSH levels showing increased odds of clinically relevant depression 4.
- The association between thyrotropin and depression is significant, with an odds ratio of 1.01 (confidence interval, 1.01-1.02, p < 0.009) after adjusting for age, sex, body mass index, Charlson Comorbidity Index, and use of thyroid hormone replacement and antidepressant medications 4.
Thyroid Disease and Mental Disorders
- Thyroid dysfunction and thyroid autoimmunity can contribute to mental symptoms and disorders in patients with thyroid disease 5.
- Hyperthyroidism can cause psychiatric symptoms due to adrenergic hyperactivity, and beta-adrenergic antagonists are effective treatment 5.
- Hypothyroidism can also cause mental symptoms, although causality is not as evident as in hyperthyroidism, and genetic factors can contribute to the development and treatment outcome of mental disorder in hypothyroidism 5.