Question

Which of the following is true regarding anaphylaxis?

A. The signs and symptoms of anaphylaxis begin within 30-60 seconds
B. Reactions that develop more slowly tend to be much more severe
C. Angioneurotic edema is a rare manifestation of anaphylaxis
D. The release of histamine causes gastrointestinal motility to decrease.

Answer 1

Anaphylaxis is a severe allergic reaction with rapid onset of symptoms, including a drop in blood pressure and swelling of the tongue and throat. Histamine release is responsible for many symptoms of anaphylaxis.

Step-by-step explanation:

Anaphylaxis is a severe allergic reaction that can be life-threatening. It is characterized by a rapid onset of symptoms, such as a drop in blood pressure, changes in heart rate, shortness of breath, and swelling of the tongue and throat. The release of histamine is responsible for many of the symptoms of anaphylaxis.