title: [Cardiac myopathy due to overt hypothyroidism].
abstract: METHODS
  A 51-year-old man presented with progressive tiredness, proximal muscle weakness, hair loss and weight gain for months. The patient showed mild pretibial myxedema and dry skin. Laboratory findings revealed strongly elevated cardiac enzymes as well as marked hypothyroidism.
  
  
  METHODS
  The electrocardiogram, echocardiography, abdominal sonography and chest X-ray were unremarkable. Thyroid ultrasound demonstrated features of Hashimoto thyroiditis.
  
  
  METHODS
  The findings supported the diagnosis of an overt hypothyroidism with myxedema and rhabdomyolysis. After starting levothyroxine and volume substitution laboratory parameters and clinical condition slowly normalized.
  
  
  CONCLUSIONS
  Severe overt hypothyroidism may rarely present primarily as myopathy with myositis and cardiac involvement.
authors.affiliation: Medizinische Klinik 1, Universitätsklinikum Schleswig-Holstein Campus Lübeck.
authors.forename: B
authors.initials: B
authors.lastname: Harbeck
authors.affiliation: Medizinische Klinik 1, Universitätsklinikum Schleswig-Holstein Campus Lübeck.
authors.forename: M J
authors.initials: MJ
authors.lastname: Berndt
authors.affiliation: Medizinische Klinik 1, Universitätsklinikum Schleswig-Holstein Campus Lübeck.
authors.forename: H
authors.initials: H
authors.lastname: Lehnert
mesh_terms: D009202:Cardiomyopathies / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology*; D003937:Diagnosis, Differential; D015716:Electrocardiography, Ambulatory; D050031:Hashimoto Disease / Q000150:complications / Q000175:diagnosis / Q000188:drug therapy; D006801:Humans; D007037:Hypothyroidism / Q000150:complications* / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D009230:Myxedema / Q000150:complications / Q000175:diagnosis / Q000188:drug therapy; D013960:Thyroid Function Tests; D014463:Ultrasonography