Hi, my wife has just turned 74, has type 2 diabetes & is on tablets for high blood pressure. The last few months i've noticed she has volume on tv a lot louder than previously & the last few weeks i've noticed that on occasions she has small head nodding periods lasting about 10 seconds. When i mention these to her she gets annoyed and says she is ok and stop worrying. Am i really worrying about nothing or are these early symptoms.