was machen bei allergischer reaktion — when to see a doctor?

The question about what to do in case of an allergic reaction and when to see a doctor is medically important, but the provided context does not contain specific information on this topic. In general, for mild symptoms like localized itching or hives, antihistamines may help. However, a doctor should be consulted immediately if symptoms include difficulty breathing, swelling of the face or throat, dizziness, nausea/vomiting, or rapid progression – these may indicate anaphylaxis requiring emergency treatment. For recurrent or unclear reactions, an allergist should be seen. Since the context lacks validated studies or guidelines on this subject, these recommendations are based on general medical knowledge. Therefore, the evidence is rated as unclear. For personalized advice, consult a physician or allergist.