How should a caller handle allergy/anaphylaxis signs but not yet collapsed?

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When signs of an allergy could progress to anaphylaxis but the person hasn’t collapsed yet, treat it as potentially life-threatening because airway swelling and breathing trouble can develop rapidly. If there are any airway symptoms or swelling (breathing difficulties, hoarse voice, swelling of lips, tongue, or face), call emergency services immediately and stay with them, watching breathing and level of consciousness. Even if airway symptoms aren’t present yet, escalate care urgently and monitor closely, because progression can occur quickly. Do not rely on antihistamines alone or delay seeking help; they won’t reverse airway involvement. Keep the person seated or lying down, remove any trigger if possible, and if an epinephrine auto-injector is prescribed and you’re trained to use it, administer it and then call emergency services if not already done.