Preprint Case Report Version 1 Preserved in Portico This version is not peer-reviewed

A Case of Polymyositis Associated with Cytomegalovirus Infection in a Patient with Hashimoto’s Thyroiditis

Version 1 : Received: 7 September 2023 / Approved: 8 September 2023 / Online: 11 September 2023 (09:31:53 CEST)

A peer-reviewed article of this Preprint also exists.

Ktona, E.; Budani, B.; Kostas-Agnantis, I.; Idrizi, A. A Case of Polymyositis Associated with Cytomegalovirus Infection in a Patient with Hashimoto’s Thyroiditis. Life 2023, 13, 2331. Ktona, E.; Budani, B.; Kostas-Agnantis, I.; Idrizi, A. A Case of Polymyositis Associated with Cytomegalovirus Infection in a Patient with Hashimoto’s Thyroiditis. Life 2023, 13, 2331.

Abstract

Polymyositis is a rare condition with an unknown etiology occurring more frequently in adult women. There is a lack of evidence on the coexistence of PM and CMV infection in a patient with Hashimoto Thyroiditis hypothyroidism. However, the increasing incidence of CMV infection and autoimmune diseases overlapping points out a relationship, while the association direction remains unclear. Case outline: A 32-year-old woman recently treated for HT hypothyroidism was admitted to the hospital two weeks after being treated for common flu by the family doctor, complaining about a worsening condition with muscle pain, weakness, frequent falls, and fatigue. The first tests showed a normalized thyroid function, with elevated values of troponin and serum creatinine kinase (KC). The immunological tests revealed the presence of a high titer of CMV IgG antibodies and raised levels of CMV DNA. Pelvis MRI images demonstrated markedly elevated signals on the STIR sequences in the pelvis, thighs, and calves, indicating active and severe multifocal myositis. The diagnosis of PM was confirmed with the muscle biopsy on day 7 of hospitalization. The patient showed significant improvements within two weeks after the medical therapy and physiotherapy.

Keywords

Polymyositis; Cytomegalovirus infection; Hashimoto`s thyroiditis, association, coexistence, autoimmune diseases

Subject

Medicine and Pharmacology, Internal Medicine

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