Lecture Notes: Cold Urticaria and Allergies to Cold Weather

Introduction

• People living in cold climates, like Michigan, often consider themselves adapted to cold.
• However, it is possible to develop an allergy to cold weather known as cold urticaria.

Case Study

• A personal story about a child diagnosed with cold urticaria.
• The child experiences hives when exposed to cold temperatures.
• The use of a face mask helps control symptoms, but is not ideal for outdoor play.

Cold Urticaria Overview

• Cold Urticaria: An allergic-like reaction triggered by cold temperatures.
• Symptoms include hives, swelling, and reactions similar to other allergies.
• Severity varies: for some, it takes freezing temperatures, while for others, air conditioning or the freezer aisle can trigger a reaction.

Expert Insights

• Dr. from Helen DeVos Children's Hospital provides insights:
  • Cold triggers allergy cells, not through a true allergic mechanism.
  • Reactions are usually consistent; exposure to cold typically results in hives on exposed skin.

Management and Risks

• Management:
  • Stay bundled up and warm.
  • Antihistamines can help control symptoms.
• Risks:
  • Danger of systemic reaction if jumping into cold water, potentially life-threatening.
  • Important to avoid situations like polar plunges if diagnosed.

Prevalence and Awareness

• Uncertain if cases are increasing, but more awareness is beneficial.
• Cases often noted at the onset of cold weather.

Prognosis and Treatment

• About 50% may outgrow cold urticaria within 5-6 years.
• Staying warm and antihistamines recommended for managing symptoms.

Conclusion

• Cold urticaria is rare and peculiar, especially in cold regions like Michigan.
• Awareness and proper management are crucial for those diagnosed.
• Consultation with healthcare providers for personalized advice is advisable.