Anaphylaxis is a rare, life-threatening form of allergic reaction. Anaphylaxis usually begins as a normal allergic symptoms typically manifesting as runny nose. However, few minutes later, the individual can develop following symptoms: - swelling of mouth - hives - nausea - vomiting - dizziness - fainting - tachycardia Epinephrine is required immediately in order to save life. Reference: https://www.webmd.com/allergies/anaphylactic-shock-facts#091e9c5e815a7368-1-4 Image via: https://www.medical.theclinics.com/article/S0025-7125(10)00048-9/references