What is one of the primary signs of anaphylactic attack?

Urticaria, also known as hives, is one of the primary signs of an anaphylactic attack. During anaphylaxis, the body's immune system reacts severely to an allergen, leading to a cascade of symptoms due to the release of chemicals like histamine. Urticaria is characterized by raised, itchy welts on the skin that can vary in size and may appear on various parts of the body. This response is part of the inflammatory process that occurs during anaphylaxis and can indicate that the body is experiencing an allergic reaction.

In contrast, symptoms such as dry mouth, abdominal distention, and weight gain are not primary indicators of anaphylaxis. Dry mouth may occur in some situations but is not a direct sign of anaphylactic shock. Abdominal distention may be related to various gastrointestinal conditions but does not specifically indicate an allergic reaction. Weight gain is unrelated to anaphylaxis and does not reflect the acute reactions that characterize this serious condition. Understanding these varying symptoms helps in identifying and managing anaphylaxis promptly.