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Persistent Cough in Infant

Pediatrics Expert Advice from Henry Bernstein, M.D.

Q: My five-month-old daughter has had a phlegmy cough for almost three weeks now. Her doctor said it will clear up on its own, but it doesn't seem to be. Her only other symptom is occasional sneezing. Are there over-the-counter medications you would recommend?

A: A viral respiratory infection is most often the cause of a baby's cough and sneezing. Other symptoms may include low-grade fever, stuffy nose, watery eyes, and fussiness. If your baby is in day care, she is even more likely to catch a viral infection. It is not unusual for a cough to linger for a few weeks. Sometimes babies even get one viral infection right after another, which makes it seem like the cough and cold is going on forever.

Pediatricians prescribe antibiotics when they find a bacterial infection in a child, such as a strep throat (pharyngitis), chest infection (pneumonia), or an ear infection (otitis media). Unfortunately, antibiotics do not treat viral infections; they only help cure bacterial infections. Viral infections resolve on their own with time.

Most over-the-counter cold medicines do not work very well in babies either, and they can have noticeable side effects. Luckily, there are some safe and easy ideas for making your daughter more comfortable while she is sick. Try running a humidifier in her room, especially at night, to help loosen the nasal congestion. If she has lots of nasal congestion, you can put a few drops of salt water (1/4 teaspoon of salt mixed in 8 ounces of warm water) in each nostril and then use a bulb suction to help clear the secretions in her nose. Also, encourage her to drink a lot of liquids, which will help to thin out her phlegm.

Since your daughter has had a cough for a few weeks and it sounds like you do not think it is improving, you may want to have her checked by the doctor. Although a viral infection is the most likely culprit, you should always feel comfortable having your child examined by the doctor in order to reassure you and to have all of your questions answered.

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Henry Bernstein, M.D., is currently the associate chief of the Division of General Pediatrics and director of Primary Care at Children's Hospital, Boston. He also has an academic appointment at Harvard Medical School.


Please note: This "Expert Advice" area of FamilyEducation.com should be used for general information purposes only. Advice given here is not intended to provide a basis for action in particular circumstances without consideration by a competent professional. Before using this Expert Advice area, please review our General and Medical Disclaimers.

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