Which of the following is a sign of anaphylactic shock?

Hives, also known as urticaria, are indeed a common sign of anaphylactic shock. Anaphylaxis is a severe, potentially life-threatening allergic reaction that can occur suddenly after exposure to an allergen. One of the hallmark symptoms of this condition is the development of hives, which appear as raised, itchy welts on the skin due to the release of histamines and other chemicals in response to the allergen.

Hives often accompany other symptoms of anaphylaxis, such as difficulty breathing, swelling of the throat or tongue, rapid heartbeat, and a drop in blood pressure. Identifying hives is crucial for early recognition and swift intervention in anaphylactic emergencies.

In contrast, hypertension is not typically associated with anaphylactic shock; instead, patients often experience hypotension or low blood pressure due to vascular dilation. Fatigue is a non-specific symptom that can occur in many conditions, but it is not directly indicative of anaphylaxis. Fever, while it may indicate an infection or other medical issue, does not signal an allergic reaction like anaphylaxis.