Abstract

Hyperthyroidism is a clinical syndrome with systemic and neurological features developing as a result of elevation in thyroid hormone levels. A 16 year-old male patient was admitted with easy fatiguebility and fasciculations in his extremities existing for 5 years and progressing in the last 3-4 months. We investigated myopathies and channelopathies. We only found a mild elevation in T4 hormone level. Treatment of this condition revealed a dramatic improvement in the clinical picture. We concluded that mild thyroid hormone elevations might cause serious systemic and neurological symptoms and should be considered in differential diagnosis.

Key words: Hyperthyroidism, myophaty, channelopathy