Allergy to Bed Sheets: Dust Mites, Symptoms, and First Aid Awareness (Canada)

An “allergy to bed sheets” is rarely caused by the sheets themselves. In most cases, the reaction is due to dust mites, microscopic organisms that thrive in warm, humid environments—especially bedding, pillows, and mattresses.

While some people may react to detergents or fabric fragrances, dust mites are by far the most common cause of nighttime and morning allergy symptoms across Canada.

Understanding this type of allergy is important not only for symptom control at home, but also for first aid awareness in workplaces, schools, childcare settings, and shared accommodations where bedding is reused or stored improperly.

Why Bed Sheets Trigger Allergy Symptoms

Dust mites feed on dead skin cells and multiply quickly in bedding that is not washed regularly. People who are allergic are not reacting to the mites themselves, but to proteins found in their waste and body fragments.

When these allergens are inhaled:

• The immune system overreacts

• Histamine is released

• Allergy symptoms develop, often while sleeping or shortly after waking

This explains why many people feel worse at night, early morning, or after changing beds (hotels, camps, dormitories).

Common Signs and Symptoms

Dust mite allergy symptoms typically involve the airways, eyes, and skin, which is why they are often discussed in first aid and CPR training as potential breathing-related concerns.

Typical Symptoms Include:

• Sneezing and nasal congestion

• Runny nose or postnasal drip

• Sinus pressure or headache

• Itchy, watery, or red eyes

• Coughing, especially at night

More Serious Symptoms (Asthma-Related):

• Chest tightness

• Wheezing

• Shortness of breath

• Difficulty breathing during sleep

⚠️ Individuals with allergy-induced asthma may experience symptoms that escalate quickly and require prompt first aid or medical attention.

Why This Matters for First Aid & Workplace Safety

Dust mite allergies are relevant in:

• Workplaces with shared rest areas or overnight accommodations

• Childcare centres and schools (nap mats, blankets)

• Healthcare, shelters, and camps

• Hotels, lodges, and training facilities

First aid providers should recognize that breathing difficulty triggered by allergens can mimic or worsen asthma attacks and may require emergency response if symptoms escalate.

Managing and Preventing Dust Mite Exposure

Reducing dust mites is the most effective way to control symptoms.

Practical Prevention Steps:

• Wash sheets, pillowcases, and blankets weekly in hot water (≥130°F / 54°C)

• Dry bedding thoroughly using high heat

• Use dust-mite-proof covers for mattresses and pillows

• Avoid placing stuffed toys or extra pillows on the bed

• Reduce indoor humidity where possible

Dry cleaning is also effective for items that cannot be washed in hot water.

Diagnosis and Medical Support

If symptoms persist despite good cleaning practices, an allergist can confirm a dust mite allergy through skin or blood testing. Medications such as antihistamines, nasal sprays, or asthma inhalers may be recommended.

From a first aid perspective, it is important to:

• Know if someone has allergies or asthma

• Be aware of their prescribed medications

• Recognize when symptoms are becoming severe

⚠️ Educational & First Aid Disclaimer

This article is intended for public education and first aid awareness only.
It does not replace medical advice, diagnosis, or treatment.

If someone experiences severe breathing difficulty, chest tightness, or worsening asthma symptoms, activate emergency medical services (911 in Canada) and follow workplace or first aid emergency procedures.