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To a tree or a flowering plant, pollen is necessary for life. But to millions of Americans, it is a source of seasonal misery.

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Pollen, a fine to coarse powdery substance, is created by certain plants as part of their reproduction process. It can appear from trees in the spring, grasses in the summer, and weeds in the fall.

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Pollen in the air can trigger sneezing, congestion, watery eyes, and other cold-like symptoms. Seasonal allergies \u2013 also known as allergic rhinitis or hay fever \u2013 may affect nearly one in six Americans.¹

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Research suggests that weather changes can affect allergy symptoms. Extreme weather events, such as heat waves and thunderstorms, have been associated with outbreaks of allergic asthma, especially in patients suffering from pollen allergy.²

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FDA-approved allergy treatments are available for children and adults. Common antihistamines and nasal steroid sprays can reduce hay fever symptoms. Scientists are also trying to design nasal filters that can screen out pollen without getting in the way of natural breathing.³

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\n \n Seidman MD, Gurgel RK, Lin SY, Schwartz SR, Baroody FM, Bonner JR, Dawson DE, Dykewicz MS, Hackell JM, Han JK, Ishman SL, Krouse HJ, Malekzadeh S, Mims JW, Omole FS, Reddy WD, Wallace DV, Walsh SA, Warren BE, Wilson MN, Nnacheta LC, 2015. Clinical practice guideline: Allergic rhinitis. Otolaryngology\u00e2\u0080\u0093Head and Neck Surgery 152(1 Suppl):S1-43. [Abstract Seidman MD, Gurgel RK, Lin SY, Schwartz SR, Baroody FM, Bonner JR, Dawson DE, Dykewicz MS, Hackell JM, Han JK, Ishman SL, Krouse HJ, Malekzadeh S, Mims JW, Omole FS, Reddy WD, Wallace DV, Walsh SA, Warren BE, Wilson MN, Nnacheta LC, 2015. Clinical practice guideline: Allergic rhinitis. Otolaryngology\u00e2\u0080\u0093Head and Neck Surgery 152(1 Suppl):S1-43.] \n
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\n \n D\u00e2\u0080\u0099Amato G, Cecchi L, Annesi-Maesano I, 2012. A Trans-disciplinary overview of case reports of thunderstorm-related asthma outbreaks and relapse. Eur Respir Rev 21(124): 82-87. [Abstract D\u00e2\u0080\u0099Amato G, Cecchi L, Annesi-Maesano I, 2012. A Trans-disciplinary overview of case reports of thunderstorm-related asthma outbreaks and relapse. Eur Respir Rev 21(124): 82-87.] \n
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\n \n Kenney P, Hilberg O, Laursen AC, Peel RG, Sigsgaard T. 2015. Preventive effect of nasal filters on allergic rhinitis: A randomized, double-blind, placebo-controlled crossover park study. J Allergy Clin Immunol 136(6):1566-1572.e1-5. [Abstract Kenney P, Hilberg O, Laursen AC, Peel RG, Sigsgaard T. 2015. Preventive effect of nasal filters on allergic rhinitis: A randomized, double-blind, placebo-controlled crossover park study. J Allergy Clin Immunol 136(6):1566-1572.e1-5.] \n
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To a tree or a flowering plant, pollen is necessary for life. But to millions of Americans, it is a source of seasonal misery.

\n

Pollen, a fine to coarse powdery substance, is created by certain plants as part of their reproduction process. It can appear from trees in the spring, grasses in the summer, and weeds in the fall.

\n

Pollen in the air can trigger sneezing, congestion, watery eyes, and other cold-like symptoms. Seasonal allergies \u2013 also known as allergic rhinitis or hay fever \u2013 may affect nearly one in six Americans.¹

\n

Research suggests that weather changes can affect allergy symptoms. Extreme weather events, such as heat waves and thunderstorms, have been associated with outbreaks of allergic asthma, especially in patients suffering from pollen allergy.²

\n

FDA-approved allergy treatments are available for children and adults. Common antihistamines and nasal steroid sprays can reduce hay fever symptoms. Scientists are also trying to design nasal filters that can screen out pollen without getting in the way of natural breathing.³

\n

To a tree or a flowering plant, pollen is necessary for life. But to millions of Americans, it is a source of seasonal misery.

\n

Pollen, a fine to coarse powdery substance, is created by certain plants as part of their reproduction process. It can appear from trees in the spring, grasses in the summer, and weeds in the fall.

\n

Pollen in the air can trigger sneezing, congestion, watery eyes, and other cold-like symptoms. Seasonal allergies \u2013 also known as allergic rhinitis or hay fever \u2013 may affect nearly one in six Americans.¹

\n

Research suggests that weather changes can affect allergy symptoms. Extreme weather events, such as heat waves and thunderstorms, have been associated with outbreaks of allergic asthma, especially in patients suffering from pollen allergy.²

\n

FDA-approved allergy treatments are available for children and adults. Common antihistamines and nasal steroid sprays can reduce hay fever symptoms. Scientists are also trying to design nasal filters that can screen out pollen without getting in the way of natural breathing.³

\n

To a tree or a flowering plant, pollen is necessary for life. But to millions of Americans, it is a source of seasonal misery.

\n

Pollen, a fine to coarse powdery substance, is created by certain plants as part of their reproduction process. It can appear from trees in the spring, grasses in the summer, and weeds in the fall.

\n

Pollen in the air can trigger sneezing, congestion, watery eyes, and other cold-like symptoms. Seasonal allergies \u2013 also known as allergic rhinitis or hay fever \u2013 may affect nearly one in six Americans.¹

\n

Research suggests that weather changes can affect allergy symptoms. Extreme weather events, such as heat waves and thunderstorms, have been associated with outbreaks of allergic asthma, especially in patients suffering from pollen allergy.²

\n

FDA-approved allergy treatments are available for children and adults. Common antihistamines and nasal steroid sprays can reduce hay fever symptoms. Scientists are also trying to design nasal filters that can screen out pollen without getting in the way of natural breathing.³

\n

To a tree or a flowering plant, pollen is necessary for life. But to millions of Americans, it is a source of seasonal misery.

\n

Pollen, a fine to coarse powdery substance, is created by certain plants as part of their reproduction process. It can appear from trees in the spring, grasses in the summer, and weeds in the fall.

\n

Pollen in the air can trigger sneezing, congestion, watery eyes, and other cold-like symptoms. Seasonal allergies \u2013 also known as allergic rhinitis or hay fever \u2013 may affect nearly one in six Americans.¹

\n

Research suggests that weather changes can affect allergy symptoms. Extreme weather events, such as heat waves and thunderstorms, have been associated with outbreaks of allergic asthma, especially in patients suffering from pollen allergy.²

\n

FDA-approved allergy treatments are available for children and adults. Common antihistamines and nasal steroid sprays can reduce hay fever symptoms. Scientists are also trying to design nasal filters that can screen out pollen without getting in the way of natural breathing.³

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