Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Hereditary angioedema ?
    ### Response:
    What are the signs and symptoms of Hereditary angioedema? Hereditary angioedema is characterized by recurrent episodes of severe swelling (angioedema). The most commonly involved areas of the body are the limbs, face, intestinal tract, and airway. While minor trauma or stress may trigger an attack, swelling often occurs without a known trigger.
    