Why Do You Wake Up With a Dry Mouth Every Morning? It May Not Be Just Dehydration

There is no single reason for night-time nasal blockage.

Several conditions can make nasal breathing harder.

1. Allergies

Allergies can cause swelling inside the nose.

Dust, pollen, pet dander, and other triggers may lead to congestion, sneezing, itching, or a runny nose.

For some people, these symptoms become more noticeable at night.

If your dry mouth happens more often during certain seasons or after exposure to dust, tell your doctor.

2. A Cold or Nasal Infection

A common cold can temporarily block the nose.

When the nose is congested, you may naturally breathe through your mouth more often.

In most cases, this improves as the cold gets better.

However, if nasal blockage continues long after you recover, it may be worth getting checked.