When an asthma flare starts, your first move is to use your rescue inhaler: take 2 to 6 puffs of albuterol, and repeat every 20 minutes for up to one hour if symptoms don’t improve. While doing this, sit upright and lean forward, stay calm, and remove yourself from whatever triggered the flare. What happens next depends on how your body responds in that first hour.
First Steps When Symptoms Start
A flare usually announces itself with tightening in your chest, coughing, wheezing, or a feeling that you can’t get a full breath. As soon as you notice these signs, stop what you’re doing and sit down. Standing or lying flat makes breathing harder. The best position is sitting upright and leaning slightly forward with your elbows resting on your knees or on a table. This opens up your chest and gives your lungs more room to expand.
Take your rescue inhaler right away. Two puffs is the standard starting dose, but during a genuine flare you can take up to 6 puffs. Use a spacer if you have one, since it delivers more medication to your lungs and less to the back of your throat. If your symptoms haven’t eased after 20 minutes, take another round of puffs. You can repeat this cycle for up to one hour. If you don’t have your inhaler, call 911 immediately.
If you’re on a combination inhaler that contains both a steroid and a long-acting bronchodilator (sometimes called SMART therapy), you can use that as your reliever instead. Adults 12 and older can take up to 12 puffs total in a day, while children ages 5 to 11 should not exceed 8 puffs daily.
Breathing Techniques That Help
While your rescue medication takes effect, controlled breathing can reduce panic and make each breath more productive. Pursed lip breathing is one of the simplest: breathe in slowly through your nose for two seconds, then pucker your lips as if you’re about to whistle and exhale gently for four seconds or longer. This creates back-pressure that keeps your airways open a bit wider.
Diaphragmatic breathing, or belly breathing, is another option if you can manage it. Inhale through your nose for about four seconds so your abdomen pushes outward, hold for two seconds, then exhale slowly through your mouth for about six seconds. Don’t force deep breaths if it feels impossible. Even slowing your exhale relative to your inhale helps prevent the rapid, shallow breathing that makes a flare feel worse.
Positions That Make Breathing Easier
Your body position matters more than most people realize. Sitting and leaning forward with your forearms on your knees is the go-to posture, but several alternatives work well depending on where you are:
- Sitting at a table: Rest your head and arms on pillows stacked on the table surface. This is helpful when you’re very short of breath.
- Standing and leaning forward: Lean from the hips and rest your forearms on a chair back or countertop at a comfortable height.
- Standing against a wall: Lean back or sideways against a wall with your feet slightly apart and your hands relaxed at your sides or tucked into your waistband.
- Lying on your side: If you need to lie down, prop pillows under your head and shoulders and slightly bend your knees. Lying flat on your back compresses your airways, so avoid it.
How to Tell If It’s Getting Worse
If you own a peak flow meter, use it once you’ve taken your first round of medication. A reading between 50% and 80% of your personal best puts you in the yellow zone, meaning your flare is moderate and your action plan should be working. A reading below 50% of your personal best is the red zone, and you need emergency care.
Even without a peak flow meter, your body gives clear signals that a flare is becoming dangerous. Call 911 if any of the following happen:
- You have trouble walking or talking because you can’t catch your breath.
- The skin on your chest and neck visibly sucks inward with each breath.
- Your lips or fingernails turn blue or gray.
- You’re hunched over and unable to straighten up.
- You feel confused or unusually drowsy.
- Your wheezing suddenly stops but you’re still struggling to breathe. A “silent chest” means air is barely moving through your lungs, and it’s a medical emergency.
Also call for help if your rescue inhaler hasn’t improved your breathing after three rounds over one hour. Medication that isn’t working is itself a warning sign.
What Happens After the Flare
Once the acute episode passes, the work isn’t over. Your airways remain inflamed and hyper-reactive for days or even weeks. Lung function typically returns to baseline within one to two weeks after a moderate flare, but research on hospitalized patients found that more than two-thirds needed over seven days to recover, and about one in four took longer than 14 days.
Your doctor will likely prescribe a short course of oral corticosteroids (commonly prednisone) to tamp down the lingering inflammation. For adults, this is usually 40 to 50 mg daily for five to seven days. Children over five typically take 30 to 40 mg, while younger children take around 20 mg, often for three to five days. These short courses don’t need to be tapered, meaning you can simply stop at the end of the prescribed days, as long as you’re already using an inhaled steroid for daily maintenance.
During recovery, your lungs are more sensitive to triggers than usual. Cold air, smoke, strong fragrances, and heavy exercise can all re-trigger a flare before your airways have fully healed. This is the most important window for sticking closely to your controller medication. About 25% to 35% of asthma patients show a slower response to inhaled steroids, so if you feel like you’re not bouncing back, that’s worth discussing with your care team rather than assuming you’re doing something wrong.
Preparing Before the Next Flare
The single most useful thing you can do right now is make sure your asthma action plan is current and accessible. This is a written document, ideally created with your doctor, that spells out exactly which medications to take at each stage of worsening symptoms. Keep a copy on your phone and one in your bag.
Check your rescue inhaler today. If it’s expired, nearly empty, or buried in a drawer at home, replace it and keep it where you’ll actually have it. A spacer should live with it. If you use a peak flow meter, establish your personal best reading during a stretch of good control so you have a meaningful number to compare against during a flare. And if you’ve had more than one flare in the past year, that’s a signal your daily maintenance therapy may need adjustment, not just your rescue plan.