What are the signs and symptoms of anaphylaxis?

Updated: May 16, 2018
  • Author: S Shahzad Mustafa, MD; Chief Editor: Michael A Kaliner, MD  more...
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Initially, patients often experience pruritus and flushing. Other symptoms can evolve rapidly, such as the following:

  • Dermatologic/ocular: Flushing, urticaria, angioedema, cutaneous and/or conjunctival injection or pruritus, warmth, and swelling

  • Respiratory: Nasal congestion, coryza, rhinorrhea, sneezing, throat tightness, wheezing, shortness of breath, cough, hoarseness, dyspnea

  • Cardiovascular: Dizziness, weakness, syncope, chest pain, palpitations

  • Gastrointestinal: Dysphagia, nausea, vomiting, diarrhea, bloating, cramps

  • Neurologic: Headache, dizziness, blurred vision, and seizure (very rare and often associated with hypotension)

  • Other: Metallic taste, feeling of impending doom

See Clinical Presentation for more detail.

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