Angioedema is characterized by painless, nonpruritic, nonpitting, and well-circumscribed areas of edema due to increased vascular permeability. Angioedema is most apparent in the head and neck, including the face, lips, floor of the mouth, tongue, and larynx, but edema may involve any portion of the body. In advanced cases, angioedema progresses to complete airway obstruction and death caused by laryngeal edema. Angioedema may involve the gastrointestinal tract, leading to intestinal wall edema, which results in symptoms such as colicky abdominal pain, nausea, vomiting, and diarrhea. (To learn more click here)
Common allergens include:
-foods (such as berries, shellfish, fish, nuts, eggs, milk, and others)
-animal dander (scales of shed skin)
-exposure to water, sunlight, cold or heat
-Hives and angioedema may also occur after infections or illness (including autoimmune disorders, leukemia, and others).
What is Hereditary Angioedema?
Hereditary Angioedema (HAE) is a rare and serious genetic condition occurring in about 1/10,000 to 1/50,000 individuals. The disease is characterized by episodes of edema (swelling) in body parts, most notably the hands, feet, face, and airway passages. In addition, patients often have bouts of excruciating abdominal pain, nausea, and vomiting that is caused by swelling in the intestinal wall.