What can cause random throat swelling?

Vague question. Many causes of throat swelling: allergic rections to foods i.e., seafood, peanuts allergy to inhallents, i.e., smoke, pollen, cat dander allergy to medications (any medication) common -antibiotics, ace inhibitors, Aspirin (other non steroidal antiinflammatories trauma, infections, i.e.Strep throat genetic disorders (hereditary angioedema), cancer (paraneoplastic syndrome).