3. Skin Pressure or Tight Clothing
Why It Happens:
Prolonged pressure—caused by snug clothing, sitting too long, or heavy backpacks—can lead to a type of hives called pressure urticaria.

Solutions:
Wear loose, breathable clothes and avoid extended pressure on your skin. OTC antihistamines may help relieve symptoms.

4. Unexpected Food Triggers

Beyond classic triggers like shellfish, eggs, or peanuts, certain people react to less obvious foods such as tomatoes, citrus, spicy dishes, or fermented products.

Next Steps:
Keep a detailed food diary and track any symptoms after meals. If you notice a pattern, consult an allergist to identify potential sensitivities.

5. Medications Not Typically Linked to Allergies
How It Happens:
Some drugs—like antibiotics, non-steroidal painkillers (e.g., ibuprofen), or certain blood pressure meds—can lead to hives as a side effect.

What To Do:
Go over your medication list with your doctor, especially if the hives appeared shortly after starting something new.

6. Viral or Chronic Illnesses

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