was machen bei allergischer reaktion — what can you do yourself?

For an allergic reaction, self-care depends on severity. For mild symptoms like localized itching, sneezing, or mild rash, over-the-counter antihistamines (e.g., cetirizine, loratadine) can help. Cool compresses relieve itching. Crucially, avoid the trigger if known. For difficulty breathing, facial/throat swelling, dizziness, or circulatory collapse – this is an emergency: call emergency services (911/112) and use an epinephrine auto-injector if prescribed. Beware of self-tests: IgG food intolerance tests are not evidence-based and are discouraged by clinical guidelines. Similarly, consumer DNA tests for allergy risk (e.g., VDR, FADS2) provide only weak mechanistic associations and should not guide treatment. For recurrent or unclear reactions, consult an allergist for proper diagnosis (skin prick test, specific IgE).