The definition of a possum, or opossum, is a tree-dwelling nocturnal marsupial with fur and a prehensile tail. A small Australian mammal that lives in a tree and only comes out at night is an example of a possum. possum. possum.
More than two thirds of patients who die of anaphylaxis do so within the first: half hour. ____, a harsh, high-pitched inspiratory sound, occurs when swelling in the upper airway closes off the airway; the swelling can eventually lead to total obstruction. Stridor.
Anaphylaxis can also be called anaphylactic shock. It is an allergic reaction that can be life-threatening. In most cases, anaphylaxis will mean you need to take a trip to the emergency room. Click through the slideshow to find out about the causes of anaphylaxis.You'll also learn how to spot signs of anaphylactic shock and tips on how to treat and manage anaphylaxis.any happen with all allergic reactions. An anaphylactic reaction is different, though. That's because a number of symptoms can appear all at once. Symptoms may include: 1  itchy skin or hives. 2  a runny nose or sneezing. 3  an itchy mouth, throat, trouble swallowing, or swollen lips and tongue. 4  swollen limbs. 5  coughing.