Is There a Mental Illness in the Prince's Hand?

The Kaiser's hand was not the only part of him injured by the circumstances of his birth. His neck was also damaged and his head tilted to the left his entire life. He suffered from constant ear infections and required a series of surgeries, which left him eventually completely deaf in his left ear. There's also a chance that he was born profoundly mentally ill with a specific kind of mental illness common among royal families as a result of inbreeding.