My husband's symptoms started at age 50. He is now 71. Klonopin and Melatonin (lots of it) keeps him from getting out of bed at night, although he still thrashes around, and talks in his sleep.
Our own research , and his neurologist, told us RBD patients frequently develop Parkinson's Disease. He was diagnosed one year ago with PD. Looking back, we think there were other signs of PD, starting several years before he was diagnosed. He is doing quite well with his medications.