Asthma Attack First Aid: Warning Signs, How to Help With an Inhaler and When to Call 911

Quick answer: during an asthma attack, help the person sit upright, stay calm and use their prescribed quick-relief (rescue) inhaler, with a spacer if they have one, following their asthma action plan. Call 911 right away if they are struggling to breathe or speak, their lips or fingernails look blue or gray, the skin between their ribs or at the neck pulls in with each breath, they become drowsy or confused, or the rescue inhaler does not help. Stay with them until they are breathing comfortably or help arrives.

Asthma is common, and most people who have it manage it well day to day. Attacks still happen, often after a cold, a whiff of smoke or a sudden change in the weather, and they can happen at home, on a bus or in a crowded building lobby. Knowing what an attack looks like and how to help with an inhaler is a short skill that fits right next to CPR on a city dweller’s list.

This guide covers warning signs, first aid steps and how to prepare an apartment for asthma emergencies. It belongs to our apartment emergency kit and preparedness guide, where medications and medical supplies are part of the core kit.

Sources: CDC, “Asthma” and “Common Asthma Triggers”; National Heart, Lung, and Blood Institute (NHLBI), asthma action plan and treatment pages; American Lung Association, “Asthma Action Plan” and “Recognizing and Treating an Asthma Emergency”; American Red Cross first aid guidance on breathing emergencies; EPA, “Asthma Triggers: Gain Control.” Checked November 2026. This article is general safety information, not medical advice. Follow the asthma action plan from your doctor and call 911 in an emergency.

What Happens During an Asthma Attack

Asthma is a long-term condition affecting the airways that carry air in and out of the lungs. During an attack, the NHLBI explains, the muscles around the airways tighten, the lining of the airways swells and the airways may produce extra mucus. All three narrow the space air can pass through.

That is why an attack feels like breathing through a straw. The person may cough, wheeze or feel their chest squeezing, and breathing out takes noticeably longer than usual.

Some attacks are mild and ease quickly with a rescue inhaler. Others build over hours or days, and some become life-threatening. A first aider cannot reliably tell which is which at the start, so the safest approach is to treat every attack seriously and watch for the danger signs listed below.

Early Warning Signs and Emergency Signs

The American Lung Association and CDC describe asthma symptoms in two groups: the common symptoms of an attack and the signs of an emergency.

Common signs of an asthma attack

• Coughing that will not stop, often worse at night or after activity
• Wheezing, a whistling sound when breathing out
• Shortness of breath
• Chest tightness, pain or pressure
• Trouble sleeping because of breathing problems

Emergency signs: call 911

• Severe shortness of breath, or struggling to breathe
• Difficulty speaking in full sentences or walking because of breathlessness
• Lips, face or fingernails turning blue or gray
• Skin pulling in between the ribs, below the ribcage or at the base of the neck with each breath (retractions)
• Rapid breathing with the chest or nostrils working hard
• The quick-relief inhaler is not helping, or the relief lasts only a short time
• Drowsiness, confusion or reduced alertness

Wheezing that suddenly gets quieter is not always good news. In a severe attack, very little air may be moving, and the wheeze can fade even as the person gets worse. Judge by how hard they are working to breathe and how they look, not by the sound alone.

First Aid Steps for an Asthma Attack

American Red Cross first aid training teaches a simple sequence for someone with known asthma who is having trouble breathing. Adapt it to the person’s own asthma action plan if they have one.

1. Help them sit upright. Sitting up, leaning slightly forward with hands on knees or a table, usually makes breathing easier than lying down.
2. Stay calm and keep your voice steady. Panic speeds up breathing and makes the attack feel worse.
3. Ask about their inhaler and action plan. Most people with asthma carry a quick-relief inhaler and know their plan. Help them find it in a bag, coat or car.
4. Help them use the quick-relief inhaler. Shake it, attach a spacer if they have one, and let them take the puffs listed on their action plan. You are assisting, not prescribing.
5. Remove the trigger if you can. Move away from smoke, perfume, dust, a pet or cold air. Open a window only if the outdoor air is clean.
6. Watch closely. Note how they respond over the next few minutes.
7. Call 911 for any emergency sign, or if the inhaler is not helping. Do not drive someone in serious breathing trouble yourself if an ambulance can reach you, since paramedics can start treatment on the way.
8. Stay with them until they are breathing comfortably or emergency responders take over.

If the person becomes unresponsive and is not breathing normally, call 911 and start CPR. Our hands-only CPR and AED guide walks through the steps.

How to Use a Rescue Inhaler and Spacer

Quick-relief medicines, most often albuterol, relax the tightened muscles around the airways and work within minutes. Long-term control medicines, by contrast, are taken every day to reduce swelling and are not meant to stop an attack in progress. The person’s action plan will say which inhaler is which.

The American Lung Association teaches these basic steps for a metered-dose inhaler with a spacer:

1. Remove the caps and check the mouthpiece for anything inside.
2. Shake the inhaler well and insert it into the spacer.
3. Breathe out fully, away from the spacer.
4. Seal the lips around the spacer mouthpiece.
5. Press the inhaler once to release one puff into the spacer.
6. Breathe in slowly and deeply, then hold the breath for up to 10 seconds if possible.
7. Wait as directed on the plan before the next puff, and repeat as prescribed.

A spacer is a tube that holds the medicine so it can be inhaled more easily, and the Lung Association notes it helps more of the medicine reach the lungs. Young children often use a spacer with a face mask. Nebulizers, which turn liquid medicine into a mist, are another option some people use at home, though they need power or batteries.

What not to do

• Do not have the person lie flat
• Do not give them food or drink during a severe attack
• Do not assume someone is fine because they stopped wheezing
• Do not leave them alone, even to fetch help, if someone else can make the call

The Asthma Action Plan

An asthma action plan is a written plan from a doctor that lists a person’s medicines and what to do as symptoms change. The NHLBI and American Lung Association templates use three colored zones:

Zone	What it means	Typical guidance on the plan
Green	Doing well: no cough, wheeze or chest tightness	Take daily control medicines as prescribed
Yellow	Getting worse: some symptoms, waking at night	Add quick-relief medicine as the plan directs and call the doctor if not improving
Red	Medical alert: very short of breath, quick-relief medicine not helping	Take quick-relief medicine and get emergency help now

Many plans also use peak flow readings, a measure of how fast a person can blow air out, to decide which zone they are in.

If you live with someone who has asthma, ask to see their plan. Keep a copy on the fridge or inside a kitchen cabinet door, and a photo on your phone. Babysitters, roommates and older children should know where it is.

Common Triggers in Apartments and Cities

The CDC and EPA list common asthma triggers, and several are especially relevant to city living:

• Tobacco and other smoke, including smoke drifting through shared walls, vents or hallways
• Dust mites, which live in bedding, carpets and upholstered furniture
• Pests such as cockroaches and mice, whose droppings and body parts can trigger attacks
• Mold in damp bathrooms, around leaky windows or after a water leak
• Pets with fur or feathers
• Outdoor air pollution, including traffic exhaust and ozone on hot days
• Wildfire smoke, which can travel hundreds of miles into cities
• Respiratory infections such as colds and flu
• Cleaning and disinfection products with strong fumes

For tenants, a few steps help: report leaks and pest problems to the landlord in writing, use allergen-proof mattress and pillow covers if the doctor recommends them, run bathroom exhaust fans, and keep windows closed on high-smoke or high-pollution days. Our guide to cleaner indoor air during wildfire smoke covers HEPA filters and sealed clean rooms.

Asthma Supplies in Your Emergency Kit

Storms, power outages and evacuations make asthma harder to manage. Pharmacies close, smoke and dust rise, and stress itself can worsen symptoms. Plan ahead:

• Keep at least one spare quick-relief inhaler, and check expiration dates every few months
• Store a spacer with the spare inhaler
• Include a printed copy of the asthma action plan and a list of all medicines and doses
• Pack masks rated for smoke if wildfire smoke or debris dust is likely, and check with the doctor whether wearing one is appropriate
• For nebulizers, have a battery-powered or car-adapter option or a backup power source
• Note the pharmacy name and phone number, and the prescribing doctor’s contact details

Our emergency medication plan explains how to talk to your doctor and insurer about extra refills before a disaster. People who rely on a nebulizer should also read our guide to backup power for medical devices.

Helping a Child Through an Asthma Attack

Children often cannot describe what they feel. A young child may say their tummy hurts, stop playing, become unusually quiet or clingy, or breathe fast with their shoulders rising. The American Lung Association points out that kids may also cough repeatedly during play or at night.

The steps are the same as for adults, with a few adjustments. Sit the child upright on your lap or a chair. Use the spacer and face mask that came with their inhaler if they are too young to seal their lips around a mouthpiece. Speak calmly and give them something simple to focus on, such as counting slow breaths together.

Call 911 for the same emergency signs listed above. In small children, also watch for flaring nostrils, grunting, a belly that sucks in sharply with each breath, or a child who is too breathless to cry or feed.

After the Attack

Even when a rescue inhaler works well, an attack is a signal worth reporting. The NHLBI action plan approach calls for contacting the doctor when symptoms move into the yellow zone, and an emergency room visit should always be followed up.

Write down when the attack started, what may have triggered it, how many puffs were used and how quickly they helped. That short note helps the doctor decide whether the daily treatment needs to change. Replace any inhaler that is close to empty, and restock the spare in your kit.

Frequently Asked Questions

Can you help someone use an inhaler that is not prescribed to them?

Inhalers are prescription medicines, and the safest course is to help a person use their own. In a life-threatening emergency, call 911 and follow the dispatcher’s instructions.

How long should a rescue inhaler take to work?

Quick-relief medicine usually starts working within minutes. If breathing is not clearly better soon after the doses listed on the action plan, treat it as an emergency and call 911.

Should a person having an asthma attack lie down?

No. Sitting upright and leaning slightly forward usually makes breathing easier than lying down.

Can an asthma attack happen without wheezing?

Yes. Some people mainly cough or feel chest tightness, and in a severe attack wheezing can fade because little air is moving.

Is an asthma attack the same as anaphylaxis?

No. They can look similar because both affect breathing, but anaphylaxis is a severe allergic reaction that may also cause hives, swelling and vomiting, and it is treated with epinephrine. Our anaphylaxis first aid guide explains the difference in treatment.

The Bottom Line

Asthma attacks narrow the airways and can turn serious quickly. Help the person sit up, keep calm, and use their quick-relief inhaler with a spacer as their action plan directs. Call 911 for severe breathlessness, trouble speaking, blue or gray lips, retractions, confusion or an inhaler that is not working. At home, know where the action plan and spare inhaler live, control apartment triggers where you can, and keep asthma supplies in your emergency kit.