In most cases, nothing can be done to prevent this condition. Early treatment for some infections, cancers, and autoimmune diseases may help prevent some cases.
This condition can cause an irregular heartbeat and damage the heart and liver. Its long-term effects depend on how much harm is done to the heart and liver. Often, treatment can reverse most of this damage. Death may occur in severe cases, though this is not common.
This condition poses no risk to others. If it is due to an infection, such as tuberculosis, that infection might be contagious.