Tell me about angioedema please?

Abrupt Swelling: Angioedema (ae) abrupt swelling or edema or the dermis, subcutaneous tissue, mucosa, and submucosal tissue, caused by increase of vascular permeability. Ae can be either acquired or hereditary. Hereditary aeis secondary to a genetic mutation that is inherited as an autosomal dominant trait. Acquired ae is secondary to other causes, including medications such as angiotensin inhibitors.