HAE is a rare cronic condition, There is no rhyme or reason as t when you get attacks or how severe they may be, The family needs to research this condition at any one of the following sites, http://www.haei.org/ http://haecanada.org/ or just do a search and find the different companies that produce the drugs needed. I also read an article that says there will be a pill form coming out soon, I have been suffering from these condition myself since I was born. My first attack was when I was born, back then they didn't know how to really diagnose this condition