A 49-year-old man presented with progressive weakness of the lower limbs for 24 hours, progressing to upper limbs in the last hours.
She had a similar episode two years before, which improved with potassium intake.
She had adequate cutaneous mucosal hydration, apyrexia and TA of 130/90 mm Hg.
Neuromuscular examination revealed mild quadriparesis with predominance of lower limbs with preserved osteotendinous reflexes.
K+pl value was 1.8 mEq/L and CK was elevated.
Electrolytic replacement was initiated with good clinical response and normalization of K+pl and CK.
