It started last August with my lips and cheek swelling lasted about 24 hours, a couple of weeks later it was my tongue. I’ve ended up in the emergency room because of the swelling but seven months later the Doctors have told me they don’t know. I have had all the blood work done and all looks good but every 20 to 30 days my tongue swells so much I can’t talk or even drink water. When this does happen all I take is 60mg of prednisone (don’t know if it actually works) my main concern is that I might choke especially when it happens in the middle of the night. Any ideas anyone?