[Thyrotoxic periodic paralysis: case report (author's transl)].

Boy 19, french -- Attacks of hypokaliemic flaccid tetraplegia in 1972 -- 4 months later thyreotoxicosis -- Disappearance of neurologic symptoms and euthyroid condition after carbimazole. Relapse 5 years later of concomitant thyreotoxicosis, hypokaliemic tetraplegia attacks and lower limbs myalgias. Normal conventional and enzymatic light histology of quadriceps. Anomalies of membraneous system (T system and sarcoplasmic reticulum) on electron microscopy -- subtotal thyroidectomy -- hormonal and neurologic total recovery. Caucasoid erythrocyte and HLA groups.