Allergy Escalating Rather Quickly

Anaphylaxis recognition, emergency adrenaline auto-injector administration, and circulatory management

// IMMEDIATE ACTIONS

Execute these steps in order:

MAX PRIORITY

01
INJECT EPINEPHRINE (ADRENALINE) IMMEDIATELY

If the person has a prescribed auto-injector (EpiPen, Jext, Auvi-Q), use it immediately at the first sign of airway swelling, breathing difficulty, or dizziness.
- ├─ Grasp the auto-injector with a fist (never place thumb over needle end) and pull off the safety cap.
- ├─ Push needle tip firmly into the outer mid-thigh at a 90-degree angle (can be given through clothing).
- ├─ Hold firmly in place for 3 to 5 seconds (or per device manual) until the dose is delivered.
- └─ Remove injector and gently massage injection site for 10 seconds.
02
CALL 911 / 112 IMMEDIATELY

State clearly to emergency dispatch: "Anaphylaxis / severe allergic shock, adrenaline auto-injector administered."
03
PROPER POSITIONING (CRITICAL)

Support circulation and breathing according to the person’s symptoms:

Faint / Pale / Shock Lay flat on back and elevate legs (increases venous return to the heart).
Breathing Difficulty Allow to sit up slightly in a supported position to ease respiration.
Unconscious + Breathing Place in the recovery position.
Pregnant Lay on left side to relieve vena cava compression.
04
SECOND DOSE IF NO IMPROVEMENT

If symptoms fail to improve or worsen after 5 to 15 minutes and emergency services have not arrived, administer a second auto-injector into the opposite thigh.

// CRITICAL MISTAKES (DO NOT)

✕ Do not delay epinephrine administration to give oral antihistamines or asthma inhalers

WHY: antihistamines take 30 to 60 minutes to absorb and cannot reverse laryngeal edema or vascular collapse
✕ Do not allow the person to stand up, walk, or sit up abruptly, even if they claim they feel better

WHY: standing drains venous blood into dilated peripheral vessels, causing catastrophic "empty ventricle syndrome" and sudden cardiac arrest
✕ Do not inject epinephrine into veins, buttocks, hands, or feet

WHY: the anterolateral mid-outer thigh is the only clinically approved site ensuring rapid systemic intramuscular absorption
✕ Do not discard the used auto-injector

WHY: keep it in a safe container and hand it directly to the paramedics to confirm dose, concentration, and timing

MEMORY HOOK (THE ONE THING TO REMEMBER)

“Inject epinephrine into the outer thigh immediately, call 911/112, keep the person lying flat, and never let them stand up.”

The human immune system is an intricate biological defense network programmed to neutralize microbial invaders. Occasionally, however, the immune apparatus misclassifies an innocuous protein—such as peanut antigen, wasp venom, or penicillin—as an existential threat.

In anaphylaxis, sensitized mast cells and basophils detonate simultaneously throughout the vascular system, releasing massive waves of histamine, leukotrienes, and prostaglandins. This biochemical deluge causes systemic vascular dilation (causing blood pressure to collapse) and triggers acute smooth muscle constriction and capillary leakage (causing the airway and vocal cords to swell shut).

Recognizing Systemic Anaphylaxis

Anaphylaxis is defined clinically by rapid onset (often within seconds to minutes) involving multiple organ systems:

Airway & Breathing: Sensation of throat closure, hoarse voice, high-pitched inspiratory sound (stridor), wheezing, severe chest tightness, or inability to swallow saliva.
Cardiovascular & Central Nervous System: Sudden severe dizziness, clammy pale skin, confusion, collapse, or loss of consciousness due to profound distributive shock.
Skin & Mucosa: Widespread itchy urticaria (hives), intense flushing, and angioedema (dramatic swelling of lips, tongue, eyelids, and throat).
Gastrointestinal: Severe spasmodic abdominal cramps, nausea, vomiting, or acute diarrhea.

Epinephrine: The Only First-Line Therapy

There is no substitute for intramuscular epinephrine (adrenaline). Epinephrine acts as a physiological agonist across all affected receptor sites:

It stimulates alpha-1 adrenergic receptors, causing peripheral blood vessels to constrict, rapidly restoring blood pressure.
It stimulates beta-2 adrenergic receptors, relaxing bronchial smooth muscle to reopen the airway and halting further mast cell degranulation.

Oral antihistamines and corticosteroids take 30 to 120 minutes to achieve systemic therapeutic levels; relying on them during an evolving airway emergency is a fatal error.

The Danger of Sudden Standing (Empty Ventricle Syndrome)

During anaphylaxis, systemic vasodilation causes blood to pool heavily in the splanchnic and lower extremity vascular beds. If an anaphylactic patient stands up or walks, gravity abruptly starves the right atrium of venous return. The heart pumps on an empty chamber, causing an immediate, irreversible drop in cerebral perfusion and pulseless electrical activity (PEA) cardiac arrest. Keep the patient completely flat with legs elevated until medical responders take over.

EMERGENCY DISPATCH NUMBERS