Many people may hear the word Angioedema for the first time in their lives. According to most medical dictionaries, the term stands for the fast edema or swelling. It takes place beneath the skin or mucosa. When fluid immediately dislocates from blood vessels into the further layers, the patient can feel Angioedema. In most cases, it comes along as an allergy; also, it can be hereditary. What patients face is the quick swelling in the in-depth layers of the skin (e.g. in different facial areas like eyes or limbs).