Medical Experts

I have Privigin every 3 weeks which gives me 1 week where I feel 70% normal. Approx a week prior to treatment I deteriorate but I now have a new issue where my taste of food is strange and my teeth feel like sharp edges. Can this disease affect the tongue? Had this symptom for 8 months but only occurs a week prior to every privigen treatment and then takes 1 week to feel back to normal after treatment. Thanks S