Warning signs may include:
• Red rash, with hives/welts, that is usually itchy (It is possible to have a severe allergic reaction without skin symptoms.)
• Swollen throat or swollen areas of the body (It is possible to have a severe allergic reaction without skin symptoms.)
• Wheezing
• Passing out
• Chest tightness
• Trouble breathing, cough
• Hoarse voice
• Trouble swallowing
• Vomiting
• Diarrhea
• Stomach cramping
• Pale or red color to the face and body
• Feeling of impending doom