Mystery Diagnosis - Season 9 (2005)

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Young Payton Rule has trouble walking and using her hands from her weak muscles. Initially, she simply appears to be a late bloomer with hypotonia, but Payton doesn't improve. It turns out that she has a genetic nerve condition called Charcot-Marie-Tooth disease (CMT). Travis Walker has been a happy, active man, until he discovers a bump near his left index finger. It seems to be minor, but it grows to a big, red lump. Steroids don't help, and the lesion spreads to his pinky, wrist, his whole hand, and even up his arm. Also, Travis becomes lethargic and dehydrated ...