I had to Google Angioedema, as I had no idea what it is! I cannot offer any help or insight, but I know what it is like to have an itchy face and so I hope you get some help with this as it sounds terrible.
Samantha, 45 yrs
Stopped smoking Jan 2013.
Diagnosed. Left sided UC, 8th Feb 2014
2 x Ultimate Flora 50 billion probotics, Vit D, and Multi vitamin tab daily.
Gluten free from Sept 2014