Journey Into Fear #18.
The main character of the story, Lanny Burns, has found a way to solve his problem of being a bigamist. He just throws his first wife out a tall window. This is a horror comic, so Lanny comes to a bad end. Lanny, who is a popular singer, develops spasmodic dysphonia (called “spastic throat” in the story). It is a real neurological condition. I know about it from first hand experience: my grandmother had it. It didn’t stop her from talking, though, weak voice or not. Talking is a family trait.