Aspirin is a medication that can cause allergic reactions in some people. The severity of an aspirin allergy can vary from person to person. Some people may experience mild symptoms, while others may have a severe reaction that can be life-threatening. According to Drug Patent Watch [1], aspirin is a nonsteroidal anti-inflammatory drug (NSAID) that is used to treat pain, fever, and inflammation. It works by blocking the production of certain chemicals in the body that cause pain and inflammation.

Mayo Clinic [2] states that an aspirin allergy can cause symptoms such as hives, itching, and swelling. It can also cause more severe symptoms such as difficulty breathing, wheezing, and anaphylaxis, which is a severe and potentially life-threatening allergic reaction. Anaphylaxis can cause symptoms such as a rapid pulse, low blood pressure, and shock. It requires immediate medical attention.

According to the American Academy of Allergy, Asthma, and Immunology [3], aspirin allergy is most commonly seen in people with asthma or nasal polyps. It is important to note that not all people with asthma or nasal polyps are allergic to aspirin, but those who are may be at a higher risk of having a severe reaction.

In conclusion, the severity of an aspirin allergy can vary from person to person. While some people may experience mild symptoms, others may have a severe and potentially life-threatening reaction. If you suspect that you have an aspirin allergy, it is important to speak with a healthcare provider to determine the best course of action.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ASPIRIN
[2] https://www.mayoclinic.org/diseases-conditions/drug-allergy/expert-answers/aspirin-allergy/faq-20058225
[3] https://www.aaaai.org/tools-for-the-public/conditions-library/allergies/allergic-to-aspirin