For a lot of people across Eastern Iowa, the shift into fall and winter brings a familiar set of symptoms. The nose gets dry. The throat feels raw in the morning. Nosebleeds show up out of nowhere. Congestion that seemed to clear up in October comes back worse than before.

Most people chalk it up to the weather and move on. But there is a specific reason this happens every year, and it has a lot to do with what is going on inside your home.

What Forced-Air Heating Does to Indoor Air

When outdoor temperatures drop in Iowa and the heating system kicks on, indoor humidity levels fall quickly. Forced-air systems push dry, warm air through your home, and that air pulls moisture from everything it touches, including the lining of your nasal passages and sinuses.

Your sinuses rely on a thin layer of moisture to function properly. That moisture traps particles, filters air, and keeps tissue healthy. When indoor humidity drops too low, that layer dries out. Mucus thickens. The small hairs that help move debris out of your nasal passages slow down. Drainage becomes less efficient, and the conditions for irritation and congestion set in quickly.

What It Feels Like

The symptoms that come with dry indoor air can feel like the beginning of a cold, a lingering allergy flare, or something harder to place.

Common signs include:

• Nasal dryness or a raw feeling inside the nose
• Nosebleeds, especially in the morning
• Congestion that seems to come and go without a clear cause
• Waking up with a dry mouth or sore throat
• Increased sinus pressure or headaches
• A persistent feeling that something is off even when you are not sick

If these symptoms tend to appear shortly after you start running the heat and ease up when you spend time somewhere more humid, dry indoor air is likely a contributing factor.

Simple Steps That Can Help

There are a few straightforward things that make a difference for most people.

Adding a humidifier to your bedroom or main living area helps maintain indoor moisture at a level your sinuses can tolerate. Aim for humidity between 40 and 50 percent. A saline nasal rinse or spray can help keep nasal tissue hydrated and support normal drainage. Staying well hydrated throughout the day also helps your body maintain moisture in the mucous membranes.

These steps work well for mild symptoms. But they have limits.

When Home Remedies Are Not Enough

If you have been running a humidifier, rinsing regularly, and drinking plenty of water and your symptoms are still interfering with daily life, there may be more going on than simple dryness.

Chronic sinus irritation that goes unaddressed can progress into sinusitis, which involves inflammation and infection in the sinus cavities themselves. Symptoms of sinusitis include significant facial pressure or pain, thick or discolored drainage, reduced sense of smell, and congestion that does not respond to basic treatment.

It may be worth scheduling an evaluation if:

• Congestion or pressure has lasted several weeks
• Nosebleeds are frequent or difficult to stop
• Symptoms return every heating season and worsen over time
• You have already tried home remedies without meaningful relief

An ENT evaluation can help determine whether your symptoms are driven by dryness alone or whether there is an underlying sinus issue contributing to the problem.

Local Sinus Care in Eastern Iowa

You do not have to spend every winter managing sinus symptoms on your own. ENT Medical Services works with patients across Eastern Iowa, including Iowa City and Muscatine, who are dealing with ongoing sinus issues and want answers beyond what a humidifier can offer.

Call (319) 351-5680 or click here to schedule an evaluation with our ENT team.

Learn more about our sinus and ENT services at https://www.entmedicalservices.org/services/ent/

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