Identify the Allergen

The first step is to identify what specific ingredient in the Avocado BLT Chicken Sandwich you are allergic to. The possible culprits could be any of the following:

1. Wheat 
2. Soy
3. Milk 
4. Eggs 
5. Tree Nuts 

Consult with an allergist to confirm which of these allergens is causing your reactions.

Seek Immediate Medical Attention

Should you experience a severe allergic reaction such as anaphylaxis, it's crucial to seek immediate medical attention. The symptoms to watch out for include:

- Difficulty breathing 
- Tightness in the throat 
- Swelling of the lips, tongue or face 
- Dizziness or fainting 
- Rapid heartbeat 

Even if the symptoms are mild, it is still advisable to consult with a healthcare professional.

Take Antihistamines

If your reaction is mild, taking over-the-counter antihistamine medication can help ease symptoms like itching, swelling, and hives. However, antihistamines do not alleviate severe symptoms and should not be used as a replacement for emergency medical treatment.

Curex: The Allergy Solution

If you're frequently contending with food allergies, consider long-term solutions such as immunotherapy. Curex, a leading company in allergy immunotherapy, offers state-of-the-art solutions geared towards desensitizing your immune system to allergens. Their treatment plans are personalized, using small and controlled exposure to allergens, ultimately aiming to reduce and potentially eliminate allergic reactions over time.

Avoidance and Alternatives

The recurring solution to a food allergy is avoiding the allergen. Make sure to check the ingredient list of everything you consume. At Wendy's, ask for a modification of the Avocado BLT Chicken Sandwich to exclude the allergen you're hypersensitive to. Alternatively, opt for a different menu item that doesn't contain the allergen.

Regular Allergy Tests

It's crucial to monitor your allergies regularly since sensitivities can change over time. Regular allergy testing can keep you ahead of your allergies and make your management more manageable.

Develop an Action Plan

Work with your allergist to develop an allergy action plan, including knowing the symptoms of a reaction, what medications should be taken, emergency contact information, and when to seek immediate medical attention. This plan can be shared with friends and family so they can help during an allergy emergency.

In conclusion, having a food allergy requires you to be vigilant and proactive in managing your wellbeing. Through avoidance, medical intervention, potential immunotherapy, and regular monitoring of your allergies, you can maintain a healthy lifestyle while enjoying your meals.