Autosomal dominant channelopathy
Acquired<unk>  from barium poisoning, hyperthyroidism, renal disorders, and GI losses
Most first attacks happen by age 16
Young males, Asian
There is no decrease in total body potassium. Blood potassium level is normal between attacks.
Associations
Thyrotoxicosis (thyrotoxicosis periodic<unk> 
Steroids
ETOH
Renal disease
Thyrotoxicosis (thyrotoxicosis periodic<unk> 
Steroids
ETOH
Renal disease
Hypokalemic periodic paralysis
Neuromuscular weakness
Thyrotoxic periodic paralysis
Upper motor neuron:
Tianeptine toxicity
CVA
Yohimbine toxicity
Hemorrhagic stroke