<http://schema.org/description>
"Angioedema is a non-pitting edema that affects the dermis and subcutaneous layers, most often involving the tongue, lips, face and throat, but also less commonly the genitalia and viscera."^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.verywell.com/angioedema-definition-and-characterization-1739250>