Sterling Marlin has Parkinsonism:

For the past year or so, Sterling Marlin’s brain would tell his right hand to complete a fine-motor task, such as cranking a boat or buttoning the collar on a shirt. And the fingers on that hand wouldn ‘t respond. And with time his hand began to shake. Marlin said symptoms first began after he suffered a laceration to the knuckle on the middle finger of his right hand. The injury, he said, included nerve damage. But rather than go to the doctor he simply Super-Glued it closed. ‘Cut the knuckle real bad on (my) bird finger ‘¦ I couldn ‘t shoot a bird. Just impossible,’ said Marlin, reached by phone. ‘It wouldn ‘t move and I thought that was the problem. But it got healed up and I said, ‘˜’¦ Something’s still wrong. ‘ And it kept getting worse and worse and worse, so I went to the doctor to see what the hell’s going on.’ During that visit, Marlin said, doctors revealed that he had developed Parkinsonism.
‘I ‘ve had people say, ‘˜Man, you got Parkinson’s Disease? ‘ I say, ‘˜F’” naw!” laughed Marlin in signature matter-of-fact fashion. ‘It’s called Parkinsonism. It’s associated with (Parkinson’s Disease), but it’s nothing-near like it. You just take the medicine and you ‘ll be fine. It ain ‘t no problem.’ According to the Mayo Clinic’s website, Parkinsonism is ‘any condition that causes a combination of the movement abnormalities seen in Parkinson’s disease ‘” such as tremor, slow movement, impaired speech or muscle stiffness ‘” especially resulting from the loss of dopamine-containing nerve cells (neurons).’(ESPN)(10-28-2012)