Effects of subclinical hypothyroidism treatment on psychiatric symptoms, muscular complaints, and quality of life

Efeitos do tratamento do hipotiroidismo subclínico sobre sintomas psiquiátricos, queixas musculares e qualidade de vida

Vaneska Spinelli Reuters Cloyra de Paiva Almeida Patrícia de Fátima dos Santos Teixeira Patrícia dos Santos Vigário Márcia Martins Ferreira Carmen Lucia Natividade de Castro Marco Antônio Brasil Antônio José Leal da Costa Alexandru Buescu Mário Vaisman About the authors

OBJECTIVES: To evaluate the impact of subclinical hypothyroidism (sHT) treatment on health-related quality of life (QoL), psychiatric symptoms, clinical score, and muscle function. MATERIALS AND METHODS: In this randomized double-blind study, patients were assigned either to treatment (n = 35) or placebo (n = 36). Clinical and psychiatric symptoms were assessed by the Zulewski, Hamilton and Beck scales. QoL was assessed by the SF-36 questionnaire. Assessments of quadriceps (QS) and inspiratory muscle (IS) strength were performed by a chair dynamometer and a manuvacuometer. RESULTS: Treatment improved IS (+11.5 ± 17.2; p = 0.041), as did QoL domains "Pain" and "Role Physical" (+19.7 ± 15.2, 0.039 and +22.1 ± 47.5, p = 0.054; respectively). Clinical and psychiatric symptoms showed similar responses to both interventions. CONCLUSIONS: sHT treatment improved IS and physical aspects of QoL, despite no impact in other muscle parameters. Clinical score, psychiatric symptoms, and SF-36 domains, based on mental dimensions of QoL may be more susceptible to "placebo effect" in patients with sHT.

Anxiety; depression; quality of life; levothyroxine

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