immune disorders
Hereditary and Acquired Angioedema
Diagnosis
Blood tests Doctors suspect hereditary or acquired angioedema if both of the following are present: People have swelling in the face, lips, tongue, hands, feet, genitals, and/or other areas of the body but do not have hives. The swelling recurs, and no cause is apparent. Doctors also suspect one of these disorders if angioedema is triggered by a minor injury. If family members also have these symptoms, doctors suspect hereditary angioedema. Doctors diagnose hereditary or acquired angioedema by measuring C1 inhibitor levels or activity in a sample of blood. 