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In the spring and fall, tree, grass, and weed pollens become airborne and can cause sneezing, a runny nose, and itchiness in your nose, throat, and eyes.

Doctors call it seasonal allergic rhinitis or allergic conjunctivitis (when it affects the eyes), but most of us just call it hay fever.

Even when the pollen count is high and the breezes are stiff, it's possible to take steps to reduce symptoms of your seasonal allergies.

Here are nine simple steps to keep your hay fever symptoms at bay.

1. Leave your shoes at the door.

When you come home from the outside, taking your shoes off at the door lessens the amount of pollen you track into the house. Wipe down your dog's coat before he comes into the house, too, because pollen clings to fur.

2. Wash your hair before bed.

If you're a morning shampoo person, consider switching to shampooing and showering before bed instead. That way, pollen that collected on your hair during the day won’t rub off on your pillow.

3. Close up the house.

Open windows can be refreshing, but they let in pollen.

Close windows and outside doors, especially on high-pollen days, and turn on the heat or the air-conditioning.

4. Use the ''recirculate" option in the car.

Keep windows and sunroofs closed. Especially on high-pollen days, recirculate the air in your car instead of using the vent, which may let in pollen. Use the air conditioner and adjust the temperature to your comfort.

5. Service the filters in your furnace and air conditioner.

Change them at the intervals recommended by the manufacturer, or more frequently if it seems to help.

6. Adjust your indoor humidity level.

If spores from mold cause your allergies, aim for a humidity level of less than 60%. Consider buying a digital thermometer with a humidity gauge, available for about $20 or less.

You may need a dehumidifier to get a level lower than 50%.

Set up the dehumidifier on the main living level of the house, if your house has more than one story.

WebMD Video Series

Outdoor Exercise and Allergies

Don't let seasonal allergies stop your exercise routine. Get tips for outdoor fitness all year long.

Click here to watch video: WebMD Video Series