Familial periodic paralysis is an inherited condition so there is no prevention. Genetic counseling may be helpful to couples with a family history of this condition.
Repeated attacks of familial periodic paralysis over time can cause muscle weakness even between episodes. This weakness may gradually get worse. However, this condition usually responds well to treatment. Treatment is important because it may prevent long-term muscle weakness and can even restore strength to the muscles.
A person with familial periodic paralysis may pass it on to his or her children.