Why Do My Allergies Get Worse at Night?

Why Do My Allergies Get Worse at Night?

Many people notice that their allergy symptoms seem worse at night. Congestion, coughing, sneezing and itchy eyes may become more noticeable once you get into bed, making it harder to fall asleep and stay asleep.

Nighttime allergies are very common and can happen for several reasons. Allergens in the bedroom, changes in body position and even the natural timing of your body’s inflammatory response may all play a role.

Understanding why allergies get worse at night can help you find relief and sleep more comfortably.

Why Are Allergies Worse at Night?

Allergy symptoms often feel worse at night because of the way your body reacts when you lie down.

When you are upright during the day, mucus can drain more easily. At night, lying flat may make congestion feel worse and increase pressure in the sinuses. Your body also naturally releases more inflammatory chemicals at night, which can make allergy symptoms feel more intense.

For some people, nighttime symptoms may also be related to asthma or breathing issues triggered by allergies.

Patients with ongoing congestion, coughing or wheezing may benefit from professional asthma treatment if breathing problems are contributing to poor sleep.

Common Causes of Nighttime Allergies

Several allergens and environmental factors may trigger nighttime allergy symptoms.

Common nighttime allergy triggers include:

• Dust mites
• Pet dander
• Mold
• Pollen
• Bedroom carpeting
• Bedding
• Pillows
• Indoor humidity

Dust mites are one of the most common reasons allergies feel worse at night because they tend to collect in mattresses, pillows and blankets.

Why Do Allergies Get Worse When Lying Down?

Lying down can make mucus pool in the sinuses and throat, leading to:

• Increased congestion
• Postnasal drip
• More coughing
• Sinus pressure
• Trouble breathing

This can be especially uncomfortable for people who already have allergies, asthma or sinus problems.

Can Dust Allergies Be Worse at Night?

Yes. Dust allergies are often worse at night because dust mites commonly live in bedding, pillows, mattresses and upholstered furniture. Even a clean-looking bedroom may contain dust mites and other allergens.

Some ways to reduce dust allergies at night include:

• Washing bedding weekly in hot water
• Using allergen-proof mattress and pillow covers
• Vacuuming regularly
• Reducing clutter
• Keeping pets out of the bedroom
• Using an air purifier

These changes may help reduce allergy symptoms and improve sleep quality.

Can Allergies Cause Coughing at Night?

Allergies can cause nighttime coughing, especially when postnasal drip irritates the throat. When mucus drains down the back of the throat, it can trigger coughing and make it harder to sleep. If nighttime coughing is severe or comes with wheezing, shortness of breath or chest tightness, asthma may also be involved.

How to Get Relief From Nighttime Allergies

Several strategies may help reduce overall allergy symptoms at night.

These include:

• Showering before bed to remove pollen
• Keeping windows closed
• Using a HEPA air purifier
• Washing bedding regularly
• Taking allergy medication before bedtime
• Elevating your head while sleeping
• Avoiding pets in the bedroom

For some people, professional allergy care may be needed to fully control symptoms.

Patients with ongoing symptoms may benefit from allergy testing to identify the exact cause of nighttime symptoms.

The Bottom Line

Nighttime allergies are common and may be caused by dust mites, pet dander, congestion, postnasal drip or lying down. Because allergy symptoms can interfere with sleep and quality of life, it is important to identify triggers and create a plan for relief.

Simple changes in the bedroom may help, but persistent symptoms often require professional care.

Find Relief From Nighttime Allergies

If allergies are keeping you awake at night, the providers at Schweiger Dermatology & Allergy can help.

Schweiger Dermatology & Allergy offers allergy testing, treatment for indoor and outdoor allergies and personalized care plans to help patients sleep more comfortably.

Schedule an appointment today to learn more about the cause of your allergy symptoms and treatment options.

FAQs

Why do allergies get worse when I lie down?

Lying down can make mucus collect in the sinuses and throat, which may worsen congestion and coughing.

Are dust mites worse at night?

Yes. Dust mites are commonly found in bedding, pillows and mattresses, which is why symptoms may feel worse at bedtime.

Can allergies cause coughing at night?

Yes. Postnasal drip from allergies can irritate the throat and lead to nighttime coughing.

Should I see an allergy specialist for nighttime allergies?

If symptoms are frequent, severe or interfere with sleep, it may be helpful to see an allergy specialist.