Which finding would NOT be expected in a patient having an acute allergic reaction?

In the context of an acute allergic reaction, the presentation typically involves skin manifestations such as hives and swelling, as well as other symptoms like rash and redness. Sweating and pallor can also occur, especially if the patient is experiencing anxiety or shock due to the allergic reaction.

On the other hand, the presence of blisters and jaundice is not characteristic of an acute allergic reaction. Blisters may indicate a severe skin condition or burn, while jaundice, which is the yellowing of the skin and eyes due to liver dysfunction or an increase in bilirubin, is unrelated to allergic reactions. Therefore, finding blisters and jaundice in a patient during an acute allergic reaction would be unexpected and not typical of the symptoms associated with such conditions.