7. What Anaphylaxis Looks Like: Source http://www.anaphylaxis.com/ Signs / symptoms Incidence (%) Hives and swelling of skin 88 Upper airway swelling (throat tightening) 56 Difficulty breathing + wheezing 47 Flush 46 Dizziness, fainting, low BP (weak pulse) 33 Nausea, vomiting, cramps 30 Sneezing, runny nose, watery eyes 16 Headache 15 Pain below the ribcage 6 Itch without rash 4.5 Seizure 1.5 Others (metallic taste, sense of impending doom / anxiety / panic) ?
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Editor's Notes
This table summarizes the presenting signs and symptoms documented in 4 studies involving 743 patients with anaphylaxis. The most common symptoms were urticaria and angioedema, occurring in 88% of patients. The next most common manifestations were respiratory symptoms, such as upper airway edema, dyspnea, and wheezing. Cardiovascular symptoms of dizziness, syncope, and hypotension, were less common, but it is important to remember that cardiovascular collapse may occur abruptly, without the prior development of skin or respiratory manifestations. Other symptoms of rhinitis, headache, substernal pain, and pruritus without rash were less commonly observed. Lieberman P. Distinguishing anaphylaxis from other serious disorders. J Respir Dis 1995;16:411–420.
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