Allergy indicators can vary depending on the type and severity of the allergic reaction. Common signs include sneezing, nasal congestion, itchy or watery eyes, skin rashes, and swelling. In more severe cases, symptoms like difficulty breathing, chest tightness, or swelling of the throat may occur, indicating a potentially life-threatening condition called anaphylaxis. Other indicators can affect the gastrointestinal tract, leading to nausea, vomiting, or diarrhea after exposure to certain foods or allergens.Recognizing these indicators early is essential for proper diagnosis and treatment.