This type of reaction is known as anaphylaxis and results in life-threatening symptoms, including swelling of the airway, inability to breathe, and a sudden and severe drop in blood pressure. If you experience this type of allergic reaction, seek immediate emergency help. Without treatment, this condition can result in death within 15 minutes. How is an allergic reaction diagnosed? Your doctor can diagnose allergic reactions. If you experience symptoms of an allergic reaction, your doctor will perform an exam and ask you about your health history.
Seasonal Allergies: Symptoms, Causes, and Treatment
Allergy Symptoms | Common Allergy Causes | ACAAI Public Website
Some herbs and spices anise, black pepper, caraway seed, coriander, fennel, mustard, parsley Exercise-induced food allergy Eating certain foods may cause some people to feel itchy and lightheaded soon after starting to exercise. Serious cases may even involve hives or anaphylaxis. Not eating for a couple of hours before exercising and avoiding certain foods may help prevent this problem. Food intolerance and other reactions A food intolerance or a reaction to another substance you ate may cause the same signs and symptoms as a food allergy does — such as nausea, vomiting, cramping and diarrhea.
What Is an Allergic Reaction?
Tight, hoarse throat; trouble swallowing Swelling of the tongue, affecting the ability to talk or breathe Weak pulse Pale or blue coloring of skin Dizziness or feeling faint Anaphylaxis , a potentially life-threatening reaction that can impair breathing and send the body into shock; reactions may simultaneously affect different parts of the body for example, a stomachache accompanied by a rash Most food-related symptoms occur within two hours of ingestion; often they start within minutes. In some very rare cases, the reaction may be delayed by four to six hours or even longer. Delayed reactions are most typically seen in children who develop eczema as a symptom of food allergy and in people with a rare allergy to red meat caused by the bite of a lone star tick. Another type of delayed food allergy reaction stems from food protein-induced enterocolitis syndrome FPIES , a severe gastrointestinal reaction that generally occurs two to six hours after consuming milk, soy, certain grains and some other solid foods.
Nausea and vomiting When to see a doctor You might see a doctor if you have symptoms you think are caused by an allergy, and over-the-counter allergy medications don't provide enough relief. If you have symptoms after starting a new medication, call the doctor who prescribed it right away. For a severe allergic reaction anaphylaxis , call or your local emergency number or seek emergency medical help. If you carry an epinephrine auto-injector Auvi-Q, EpiPen, others , give yourself a shot right away.