At the age of 79 I became extremely anxious/depressed as a result of worry about my husband's open heart surgery (which turned out quite successful).
I began a series of anti-anxiety drugs under the care of a psychiatrist (which do not completely control the anxiety/depression, but make it less severe). Three years later I was diagnosed with Parkinson's. No one can tell me whether the drugs caused the Parkinson's or whether the anxiety/depression was an early Parkinson's symptom. It is very puzzling.
I have an awkward gait and anxiety/depression and sleep a lot at night (10 hours) and take several naps during the day. It is hard to get anything done when I am always so fatigued.