was tun bei einer allergischen reaktion — what does this mean exactly?

What to do during an allergic reaction depends on severity. For mild symptoms like itching, hives, or localized rash, oral antihistamines (e.g., cetirizine, loratadine) and cool compresses can provide relief. For difficulty breathing, facial/throat swelling, dizziness, or widespread skin involvement, this is a medical emergency: call emergency services (911/112) and use an epinephrine auto-injector if available. DNA tests like MyBody-X can indicate genetic predisposition to allergies but cannot diagnose acute triggers. For recurrent reactions, see an allergist for specific IgE blood tests or skin prick testing. Evidence for direct-to-consumer DNA allergy tests is weak; they are not validated for acute diagnosis. Avoid IgG-based food sensitivity tests, which often yield misleading results. Safety note: if you have a known severe allergy, always carry your emergency medication.