It sounds frustrating that cetirizine is no longer controlling your dust and cold allergy symptoms, including the itching around your neck and ears.

🩺 Symptom Assessment + Red Flags

• Monitor for worsening symptoms like difficulty breathing, swelling of face or throat, or severe rash, which require urgent care.
• Note if itching spreads or is accompanied by fever or pain, as these need prompt evaluation.

⚕️ Allergy Management Options

• Since cetirizine (an antihistamine) is less effective now, your doctor might consider other antihistamines, nasal corticosteroids, or leukotriene receptor antagonists.
• Allergy shots (immunotherapy) could be an option for long-term relief if symptoms persist.

🏥 Itching Treatment

• Use soothing topical creams like calamine or mild corticosteroid creams for itching around the neck and ears, but only under medical advice.
• Oral antihistamines other than cetirizine may help; consult your doctor before switching.

🏥 Environmental Control

• Reduce dust exposure by regularly cleaning, using air purifiers, and avoiding known triggers.
• Keep warm and avoid sudden cold exposure to minimize cold allergy reactions.

🩺 When to See a Specialist

• Consult an allergist or immunologist for a thorough evaluation and tailored treatment plan, especially since current medication is ineffective.
• They can perform allergy testing and recommend advanced therapies.

Please see an allergist promptly to adjust your treatment safely and effectively. If you experience any severe symptoms, seek emergency care immediately.To narrow down potential causes, we will need some more information.Please tell me your age and gender.