How curious that you both have Becker's! How many siblings are you? It would be pretty bizarre if it was just the 2 of you, and you both get it... a study in genetic crap shoots all by itself!
Well, I presume your 'joy' is because there is about zero likelihood of your kids having it. Nice. lois
Type of Myotonia: Myotonia Congenita, Becker's type