Asthma and COPD

AAbout Your Diagnosis and ED Workup

Asthma and COPD both narrow the tubes that carry air. They are not the same disease.

In asthma, three things can narrow an airway. Muscles squeeze around it. Its wall swells. Thick mucus can plug it. A rescue inhaler relaxes the muscle. It does not remove all the swelling or mucus. A controller inhaler works slowly on inflammation. Its full benefit may take 1 to 2 weeks or longer.

COPD can include emphysema and chronic bronchitis. Emphysema damages the tiny air sacs and the supports that hold small airways open. Chronic bronchitis makes too much mucus. Most people have a mixture.

With COPD, the lungs may not empty before the next breath starts. Air gets trapped. Breathing faster can worsen that trapping. Slower breathing gives more time to breathe out.

FFirst Steps and Evidence-Based Home Care

If you have asthma: know which inhaler does which job

Follow the exact asthma plan in your discharge papers. Asthma guidelines say treatment should contain an inhaled corticosteroid because rescue-only treatment can worsen asthma. Ask whether the discharge plan contains the controller treatment that is right for you.

Do not stop a controller because you feel better. It prevents attacks while you feel well.

If you have COPD: follow your separate medicine plan

COPD medicines are chosen differently. Long-acting airway-opening medicines are the base treatment, while inhaled steroids are added for selected people. Follow the names and timing in your COPD discharge plan. Do not borrow an asthma plan or change an inhaler on your own.

If you were hospitalized for a COPD flare, ask whether supervised pulmonary rehabilitation is right for you. This is a planned program after discharge, not a workout to start alone.

For either condition: show your technique at follow-up

More than two-thirds of patients make at least one inhaler error. Fewer than 40% of ED asthma or COPD patients use an inhaler correctly. At follow-up, demonstrate how each prescribed inhaler is used so technique can be checked. For a metered-dose inhaler, a spacer can make timing easier and reduce thrush.

Use the written plan for your condition

Every person with asthma should have a written, digital, or picture-based action plan. COPD action plans paired with brief teaching reduce ED visits and hospital stays. Ask for a plan if you do not have one.

If you have COPD and smoke, ask for help stopping

Stopping smoking is the only step proven to change COPD’s long-term course. It lowers flares and hospital stays.

TTimeline and Expected Recovery Course

Asthma symptoms often improve over hours to days. The controller may be increased for 2 to 4 weeks before reassessment.

A COPD flare often improves over 1 to 2 weeks, but full recovery may take 4 to 6 weeks. About one-quarter still have symptoms at 25 to 35 days. Some never return to their former baseline. Each COPD flare can speed future loss of lung function.

Feeling better after a rescue inhaler does not mean airway swelling and mucus are gone. The fast medicine treats only part of the narrowing.

EEmergency Red Flags: Return Immediately

Call 911 now if breathing is so hard that you cannot speak in full sentences; your lips or face look blue or gray; or you are confused, very drowsy, fainting, or becoming less responsive.

If you have asthma

Return for rapidly worsening breathing, rescue treatment that is not working or does not last, or symptoms or peak flow in the red zone of your written asthma plan. A good-looking home oxygen or peak-flow number does not overrule severe symptoms.

If you have COPD

Return for breathing that is clearly worse than your usual level or is not controlled by your discharge plan. Also return for new fever, a large increase or change in mucus, chest pain, new confusion or drowsiness, blue or gray color, or new or worsening leg swelling. These signs may come from COPD or another urgent problem. You do not need to decide which one before seeking care.

This list does not cover everything. Return to the emergency department if you are worried about a serious change.