I wonder is it not a side effect of Letrozole. I was doing so well on Letrozole, but this cycle is really kicking my behind. Most of my side effects started in the last 3 weeks. Started off with tight neck muscles and slowly gotten worse to the point where my neck and back of head was warm to touch. Now there is the burning pain and just strange sensation (feels like neuropathy to me).

All the best with your appointment. Please keep me posted.