The weakness or paralysis:
Comes and goes
Can last for up to several days
Is more common in the legs than the arms
Is most common in the shoulders and hips
Is triggered by heavy, high-carbohydrate, high-salt meals
Is triggered by rest after exercise
Other symptoms may include any of the following:
Difficulty breathing (rare)
Speech difficulty (rare)
Swallowing difficulty (rare)
Vision changes (rare)
Weakness/paralysis