The immune system defends the body against potentially harmful foreign substances by identifying and responding to them. Allergies occur when the immune system reacts to a foreign substance. In such cases, the body subsequently produces Immunoglobulin E (IgE) antibodies that aid in the fight against the antigen. Moreover, the body produces histamine, which triggers allergic reactions in the body's numerous internal systems. A coffee allergy develops when the immune system perceives coffee beans as a harmful invader. Some symptoms of a coffee allergy include: A rapid decline in blood pressure or a weak pulse A wheezing cough Breathing difficulties or shortness of breath Cramps in the stomach or abdomen Diarrhoea Hives or red spots on the skin Loss of awareness or dizziness Paler skin colour  Swallowing difficulties Vomiting and nausea Most people who start to feel sick after drinking coffee are caffeine sensitive and don’t actually have a coffee allergy. Adults should consume no more than 400 mg of caffeine per day. That's the caffeine content of about four eight-ounce coffees. More than 500 to 600 mg may cause jitteriness or other adverse effects. People who do not regularly consume a lot of caffeine may even have symptoms with just one cup. The coffee allergy arises from green coffee beans. They cause one to have an allergic reaction to coffee and sometimes cause anaphylaxis, characterised by the following: A rapid pulse Anxiety and confusion Breathing problems, such as rapid, shallow breathing Feeling dizzy or lightheaded Wheezing Losing consciousness or collapsing Clammy skin However, a coffee allergy is not life-threatening. Those with caffeine sensitivity or coffee allergy should avoid certain foods, such as: Coffee Sports drinks   Certain teas, including black, green, Pu’er, Oolong, white, etc. Some sodas and soft drinks Specific meal or exercise bars Cocoa Chocolate Avoiding these foods can help you feel better since an allergic reaction to coffee can be highly distressing. Moreover, a caffeine sensitivity along with a coffee allergy can result in an anxiety response too. Allergy skin testing and IgE antibody coffee allergy test are the quickest and most accurate methods of determining a coffee allergy. Genetic testing is less typically employed to detect a coffee allergy. However, your healthcare provider may use them to find mutations in the ADORA2A gene. A positive test result indicates a coffee allergy, whereas a negative test result indicates an intolerance towards it. Hence, avoiding coffee or related substances is the best way to ensure that one does not experience an allergic reaction to coffee. Apollo 24|7 offers a comprehensive coffee allergy test at a reasonable rate and delivers results promptly, allowing one to start treatment at the earliest.