Parkinson's. In general, parkinson's-afflicted people tend to deteriorate over time. This mainly is a neurological disease, and dementia, as well as deterioration of motor function can become compromised. That being said, I treat a lot of patients with Parkinson's disease, and most of them do not need, or have needed feeding tubes.
Not usually. Usually causes gait problems, temors, dementia, etc. Swallowing and esophogeal dysmotility not common.
No. A dietician can help here.