10
Treatment
Table 5. Differentiating Between Vasovagal and Anaphylaxis
Vasovagal Anaphylaxis
Onset Immediate, usually within minutes Typically within 30 minutes
Neurologic Fainting sensation, light
headedness, dizziness
Sense of severe anxiety and
distress
Respiratory Normal breathing, no cough, no
hoarseness
Dyspnea, wheezing, stridor,
hypoxemia, inability to
maintain airway patency,
persistent cough, throat clearing
Cardiovascular Bradycardia, hypotension Tachycardia, hypotensive
Gastrointestinal Nausea, vomiting Abdominal cramps, diarrhea,
nausea, vomiting
Skin Generalized pallor, cool, clammy
skin, absence of urticaria and
angioedema
Pruritis, generalized erythema,
urticaria, angioedema
