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Angioedema may be caused by an allergic reaction. During the reaction, histamine and other chemicals are released into the bloodstream.
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The central Pyncheon family in Nathaniel Hawthorne's The House of the Seven Gables carries an ancestral curse of dying from choking on their own blood. Hawthorne describes members of the family who made odd sounds in the throat and chest when agi...
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Allergic reactions are sensitivities to substances, called allergens, that are contacted through the skin, inhaled into the lungs, swallowed, or injected.Allergic reactions are common. The immune response that causes an allergic reaction is simila...
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