Complement deficiencies.
D000799:Angioedema / Q000097:blood; D003174:Complement C1 Inactivator Proteins; D003165:Complement System Proteins / Q000172:deficiency*; D006801:Humans; D012871:Skin Diseases / Q000150:complications
D003174:Complement C1 Inactivator Proteins; D003165:Complement System Proteins