Aspirin is a commonly used medication to treat pain, inflammation, and fever. However, some individuals may develop an allergic reaction to aspirin, which can range from mild to severe. The symptoms of an aspirin allergy can vary from person to person, but some common symptoms include:

1. Skin reactions: Skin reactions are the most common symptom of an aspirin allergy. They can include hives, itching, and rash.

2. Respiratory symptoms: Respiratory symptoms can range from mild to severe and can include difficulty breathing, wheezing, coughing, and nasal congestion.

3. Gastrointestinal symptoms: Gastrointestinal symptoms can include nausea, vomiting, and diarrhea.

4. Anaphylaxis: Anaphylaxis is a severe and potentially life-threatening allergic reaction that can occur within minutes of exposure to aspirin. Symptoms can include difficulty breathing, rapid heartbeat, and swelling of the face, lips, tongue, or throat.

It is important to note that not all symptoms may occur in every individual who is allergic to aspirin. In addition, some individuals may only experience symptoms when taking aspirin, while others may have a reaction to other nonsteroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen or naproxen.

If you suspect that you may be allergic to aspirin, it is important to speak with your healthcare provider. They may recommend allergy testing to confirm the diagnosis and provide guidance on how to manage your symptoms.

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.allergy.org.au/patients/drug-allergy/allergic-reactions-to-aspirin-and-other-pain-killers