What Causes Dizziness And Burning Sensation In Joints Despite Having Anxiety?

Woke up with dizziness two months ago and since then my body has experienced all sorts of physical sensations like burning pins and neddles, aches and sore joints. And also head pressure on the top of my hand and back the of it. I do suffer from Generalised Anxiety Disorder but I haven't experienced any attacks in about 15 years. Any idea what I'm going through would be helpful? It's almost a daily occurrence. I'm scheduled for Neurologist next month.Thank you