To my mind, some of the 'classic' symptoms would be:

Numbness in pinkie and ring fingers
extreme tenderness over collarbone(s)
'Heavy' arms
The occipital migraine (usually occurs 12-24hrs AFTER over exertion)
wasting of hand muscles


Surely there are more, but since this dx is so different for each person the sx can vary. I think these are the most basic symptoms.