What severe allergic reaction symptoms following kelp ingestion warrant immediate medical attention?

Swelling of the face, tongue, or throat.

Although allergic reactions to seaweed are less frequent than mineral imbalances, they can potentially become severe. While milder reactions like hives or a rash may occur, certain symptoms signal a critical emergency that requires immediate cessation of consumption and urgent medical intervention. The most alarming signs indicating a serious, systemic allergic response include swelling of the tissues in the face, tongue, or throat, as well as difficulty breathing. These manifestations suggest potential airway compromise, demanding immediate professional medical consultation.