Ear popping is usually caused by changes in air pressure that affect the space behind the eardrum. The main player is the Eustachian tube, a small passage connecting the middle ear to the back of the nose. When pressure changes (like during flying, driving through mountains, or diving), the tube may have trouble opening or closing smoothly, so air can’t flow freely to equalize pressure. When the pressure on both sides of the eardrum becomes more balanced, you hear or feel a “pop.” Common subtopics and quick guidance:

• Normal, temporary pops: Occur with quick altitude changes (airplane takeoff/landing, tunnel travel) or after yawning, chewing, or swallowing, which helps the Eustachian tube open.
• Eustachian tube dysfunction (ETD): When congestion from a cold, allergies, sinus infection, or nasal polyps blocks or makes the tube slow to open, causing repeated popping, fullness, or discomfort.
• Ear infections: A middle-ear infection can cause popping sounds and a sense of pressure due to fluid buildup and blocked drainage.
• Other causes: Earwax buildup or fluid in the middle ear can also alter perception of pressure and popping.

What you can try at home (if there are no red flags like severe pain, sudden hearing loss, or high fever):

• Gentle maneuvers to open the tube: swallow, yawn, or chew gum; blow gently with the mouth closed and nose pinched (Valsalva maneuver) but stop if you feel pain.
• Nasal saline spray or a steam/inhale technique to loosen mucus, especially during allergies or a cold.
• Stay hydrated and use a humidifier to reduce nasal congestion.

When to seek medical care:

• Pop persists for days, is associated with severe pain, hearing loss, fever, or