Review Question - QID 213708

A 22-year-old woman presents to the emergency department with sudden onset weakness on the left side of her body. She has never had these symptoms before but recalls several times per year when she will experience strange symptoms such as sudden visual changes, severe headaches, and loss of consciousness. She does not know what causes these symptoms though a previous physician suggested that she may have seizures or migraines. She had a relatively normal childhood until 8 years old when she started to experience occasional muscle weakness, myalgias, loss of appetite, and vomiting. If she has a son and a daughter with an unaffected husband, what is the probability that they will have the same disease?