Christie Clinic - Medicine for Your Life

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Cough

Coughing is an important way to keep your throat and airways clear. However, excessive coughing may mean you have an underlying disease or disorder.

Coughing

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Coughing

Some coughs are dry, while others are considered productive. A productive cough is one that brings up mucus. Mucus is also called phlegm or sputum.

Coughs can be either acute or chronic:

  • Acute coughs usually begin suddenly and are often due to a cold, flu, or sinus infection. They usually go away after 3 weeks.
  • Subacute coughs last 3 to 8 weeks.
  • Chronic coughs last longer than 8 weeks.
  • Common Causes

    Besides recent upper airways infections, such as the common cold and flu, other common causes of coughs include:

    If a child has a barking cough, see croup.

  • Home Care

    Although coughing can be a troubling symptom, it is usually your body's way of healing. Here are some tips to help ease your cough:

    • If you have a dry, tickling cough, try cough drops or hard candy. NEVER give these to a child under age 3, because they can cause choking.
    • Use a vaporizer or take a steamy shower. Both these things increase the moisture in the air and can help soothe a dry throat.
    • Drink plenty of fluids. Liquids help thin the mucus in your throat and make it easier to cough it up.

    NOTE: Medical experts have recommended against using cough and cold drugs in children under age 6. Talk to your doctor before your child takes any type of over-the-counter cough medicine, even if it is labeled for children. These medicines likely will not work for children, and they may have serious side effects.

    Medications available without a prescription include:

    • Guaifenesin helps break up mucus. Drink lots of fluids if you take this medicine.
    • Decongestants help clear a runny nose and relieve postnasal drip. Do NOT give children under age 6 an over-the-counter decongestant unless specifically told to do so by your doctor. You should check with your doctor before taking decongestants if you have high blood pressure.

    Do not expect a doctor to prescribe antibiotics for viral infections like colds or flu. Antibiotics do not work on viruses. Antibiotics also will not help coughs from allergies.

  • Call your health care provider if

    Call 911 if you have:

    • Shortness of breath or difficulty breathing
    • Hives or swollen face or throat with difficulty swallowing

    Call your doctor right away if you have:

    • Violent cough that begins suddenly
    • High-pitched sound (called stridor) when inhaling
    • Cough that produces blood
    • Fever (may indicate a bacterial infection requiring antibiotics)
    • Thick, foul-smelling, yellowish-green phlegm (may indicate a bacterial infection)
    • A history of heart disease, swelling in your legs, or a cough that worsens when you lie down (may indicate congestive heart failure)
    • Exposure to someone with tuberculosis
    • Unintentional weight loss or night sweats (may also indicate tuberculosis)
    • Cough longer than 10-14 days
    • Cough in an infant younger than 3 months old
  • What to expect at your health care provider's office

    In emergency cases, the patient will be treated first to stabilize the condition. After the condition is stable, the doctor will ask questions about your cough, including:

    • Are you coughing up blood? (How much, how often)
    • Do you bring up any mucus/sputum when you cough? What does it look like? Is it thick and hard to cough up? How much sputum is produced per day?
    • Is the cough severe? Is the cough dry?
    • Does the cough sound like a seal barking?
    • What is the pattern of the cough? Did it begin suddenly? Has it been increasing recently? Is the cough worse at night? When you first awaken?
    • How long has the cough lasted?
    • Is the cough worse when you are lying on one side?
    • Are there sudden periodic attacks of coughing with gagging and vomiting?
    • What other symptoms are present?

    The physical examination will include emphasis on the ears, nose, throat, and chest.

    Diagnostic tests that may be performed include:

  • Prevention
    • Don't smoke and stay away from secondhand smoke.
    • If you have seasonal allergies like hay fever, stay indoors during days when airborne allergens are high. If possible, keep the windows closed and use an air conditioner. Avoid fans that draw in air from outdoors. Shower and change your clothes after being outside.
    • If you have allergies year round, cover your pillows and mattress with dust mite covers, use an air purifier, and avoid pets and other triggers.
  • References

    Chang AB, Glomb WB. Guidelines for evaluating chronic cough in pediatrics: ACCP evidence-based clinical practice guidelines. Chest. 2006;129(1 Suppl):260S-283S.

    Irwin RS, Baumann MH, Bolser DC, et al. Diagnosis and management of cough executive summary: ACCP evidence-based clinical practice guidelines. Chest. 2006;129(1 Suppl):1S-23S.

    Kraft M. Approach to the patient with respiratory disease. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 83.

Review Date: 11/15/2009

Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- 2014 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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