Hi everyone I was diagnosed with P A 2 weeks ago. the last 5 years have been absolutely debilitating. I have had diagnosis of fybromyalgia and heart arrithmia which resulted in needing a defibrillator as my heart rate was so high. The headaches and dizziness and balance problems are the most troublesome, I have recently finished a course of b12 injections and the balance and dizziness has become unbearable. Has anyone else experienced this? I'm panicking this is permanent as I have read P A can cause nerve damage ? Any advice would be greatly appreciated. Kelly.