Re: crackling in neck and up the back of my head
I have the same problem. I've had crackling in my neck for about ten years now. It has gotten progressively worse over the years. With the increased crackling in my neck I also have a lot of problems waking up in the morning with a stiff and painful neck as if I slept on my neck wrong. This happens to me more than the average person. On average it happens about twice a week. I've tried using one of those contour memory foam pillows to decrease the possibliity of waking up with a stiff neck but it still happens.
I also have the same crackling sound in both my knees, ankles, wrists, and my shoulders. The crackling is loudest in my shoulders but does not hurt there. It does hurt in both my knees though.
I also have gastroesophageal reflux disease (GERD), Raynaud's Syndrome and within the past 6 months I've had thick calluses form on my feet and toes almost over night that worsen every day (this problem is only on my feet and toes, nowhere else). I have had a low positive ana blood titer test of 160.
I have no idea what is causing all this.