• Rev Med Interne · Jun 2007

    Case Reports

    [A case of myopathy associated with hypothyroidism and hyperprolactinaemia].

    • H Hassikou, F Tabache, S Safi, M Baaj, and L Hadri.
    • Service de Médecine Interne, Hôpital Militaire Moulay-Ismail, Meknès, Maroc. hassikouhasna@hotmail.com
    • Rev Med Interne. 2007 Jun 1;28(6):429-31.

    UnlabelledWe report a case of a serious myopathy related to hypothyroidism with pituitary enlargement and hyperprolactinemia.Case ReportMr D.L 33 years old man suffering from myalgia, muscular weakness and cramps for six months. The laboratory check-up revealed a high serum creatin phosphokinase level, an autoimmune hypothyroidism, hyperprolactinemia and pituitary enlargement. The electromyogram was normal and the muscle biopsy showed no obvious inflammation. The outcome was favourable under L. thyroxin.DiscussionThe frequency of myopathy during hypothyroidism ranges from 30 to 80%. The main symptoms related are weakness, muscular cramps and myalgia. However, hyperprolactinemia and pituitary enlargement described in this case are due to reactional mechanism. These several hypothyroid manifestations improve remarkably under L.thyroxin.ConclusionProximal myopathy may rarely be displayed as the sole manifestation of hypothyroidism. Therefore, it is recommended that hypothyroid myopathy should be taken into account during differential diagnosis of proximal muscle weakness.

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