Call 911 — You May Be Experiencing Anaphylaxis
Call 911 immediately if you experience:
- Sudden hives, flushing, or pallor of the skin
- Throat tightening, hoarse voice, difficulty swallowing
- Wheezing, shortness of breath, or chest tightness
- Rapid or weak pulse, dizziness, or loss of consciousness
- Severe nausea, vomiting, or cramping after food exposure
Recognizing Anaphylaxis
Anaphylaxis is a rapid-onset, multi-system, life-threatening allergic reaction requiring immediate epinephrine treatment. For a comprehensive clinical breakdown, see our dedicated anaphylaxis emergency guide. Symptoms often involve two or more organ systems occurring simultaneously:
- Skin: sudden hives, flushing, or pallor
- Respiratory: throat tightening, hoarse voice, wheezing, difficulty breathing
- Cardiovascular: rapid or weak pulse, dizziness, loss of consciousness
- Gastrointestinal: severe nausea, vomiting, cramping
Read our complete allergy symptoms guide to understand how to distinguish mild allergic reactions from anaphylaxis.
Medical Emergency Protocol
Food Allergy Emergency Action Plan
Follow these steps immediately — every minute matters:
Administer Epinephrine Auto-Injector
Do this firstInject into the outer mid-thigh immediately — through clothing is acceptable. There is no contraindication to epinephrine in a true anaphylactic emergency. Hold in place for 10 seconds.
Call 911
Immediately afterState: 'This person is experiencing anaphylaxis from a food allergy and has received epinephrine.' Do not drive yourself — you may lose consciousness.
Correct Positioning
While waiting for 911Lay the patient flat with legs elevated 12 inches. If they are vomiting or having trouble breathing, allow a semi-seated position. Never leave the patient alone.
Second Epinephrine Dose
After 5–15 minutes if neededIf symptoms do not improve after 5–15 minutes and a second auto-injector is available, administer it in the opposite thigh. Do not substitute antihistamines for a second epinephrine dose.
Mandatory Emergency Department Evaluation
Always requiredEven if symptoms fully resolve after epinephrine, hospital observation for a minimum of 4–6 hours is required. Biphasic anaphylaxis (symptom recurrence) affects 5–20% of patients.
Important: Antihistamines (including Benadryl) do NOT treat anaphylaxis. Never delay or replace epinephrine with an antihistamine.
Anaphylaxis Emergency Response — Critical Action Checklist
- Administer epinephrine auto-injector IMMEDIATELY into outer thigh — do not delay
- Call 911 — state anaphylaxis and epinephrine has been given
- Lay patient flat with legs elevated (unless breathing difficulty — then semi-seated)
- Note time of first epinephrine dose — second dose after 5–15 min if no improvement
- Do NOT give antihistamines instead of epinephrine — not effective for anaphylaxis
- Transport to emergency department even if symptoms resolve — biphasic risk
Prevention: Cross-Contact and Avoidance
The cornerstone of food allergy management is strict avoidance. Our food allergy cross-contact guide explains how allergens transfer during food preparation and how to minimize risk in kitchens and restaurants. All schools where allergic children attend should have a formal allergy safety protocol, and every allergic patient should carry a completed emergency action plan.