harper, a sticky is thread that is "stuck" to the top of the forum.
if you just click on the title Peripheral Neuropathy again, you will see the whole pn forum and the list of threads. at the very top...stickies.
here is a link:
http://neurotalk.psychcentral.com/showthread.php?t=177
you can also use the search feature and type in key words or members names.
let me know if i can help.