[Walter tilts his head, all of his attention diverted to Jeff. He's staring, listening to him intently. The kitten curls up on Walter's head, nose lost in the curls, and starts to purr.]

Is your skin blotchy? That's vitiligo. It can be caused by all sorts of things. How is your blood pressure? Any loss of sensation in anywhere on your body? What colour was your hair ten years ago? Itching? [He pauses.] Necrotic lesions?