The symptoms of anaphylaxis most often occur in which time timeframe?
a. generally within 72 hours
b. > 72 hours after exposure
c. suddenly, quickly progressing to severe
d. delayed, up to one week
C
Anaphylaxis is a type I systemic reaction to allergens and is the most serious type of allergic reaction. It occurs in individuals who are extremely sensitive to an allergen. Symptoms develop suddenly and can progress to severe levels within minutes. Usually, the faster the reaction, the worse it is. Foods, drugs, hormones, insect bites, blood, and vaccines all are associated with anaphylactic reactions. Shellfish, eggs, nuts, berries, and chocolates are the most common foods involved.
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