Relievers vs preventers
Inhaled medicines fall into two jobs. A reliever opens a narrowed airway quickly by relaxing the muscle — a short-acting beta-agonist is the classic rescue puff that works within minutes. A preventer is taken daily to keep trouble from starting: the cornerstone is an inhaled corticosteroid, which calms the underlying inflammation so the airway is less twitchy in the first place. Relievers treat the moment; preventers change the long game.
For longer cover there are also the long-acting versions: a long-acting beta-agonist keeps the muscle relaxed for many hours, and an antimuscarinic blocks a second nerve signal that also tightens airways — especially useful in COPD. Increasingly these are bundled into one device as a combination inhaler, which makes daily use simpler and more reliable.
Climbing the ladder
Treatment is built as a ladder: start low, step up if control is poor, step down once stable. The exact rungs differ between asthma and COPD, but the spirit is shared:
- Start with control of inflammation. In asthma, even mild disease now gets an inhaled corticosteroid rather than reliever-alone — taming the fire matters more than chasing each flare.
- Add long-acting bronchodilators — a long-acting beta-agonist and, in COPD, an antimuscarinic — usually in a combination inhaler.
- Escalate for severe disease. Higher doses, and in severe eosinophilic asthma a biologic therapy that targets the specific inflammatory pathway can transform life.
- Never skip the non-drug rungs. In COPD nothing matches smoking cessation for slowing decline; pulmonary rehab, vaccines and exercise all stack the deck in the patient's favour.
When things flare up
An exacerbation is a sustained worsening beyond normal day-to-day variation. In asthma the warning signs are needing the reliever far more often, waking at night breathless, and falling peak flow readings. A COPD exacerbation usually announces itself as more breathlessness, more cough, and a change in sputum — more of it, or turning yellow-green — often triggered by a viral or bacterial chest infection.
Management follows a clear logic: open the airways more (extra bronchodilator, often by nebulizer), damp the inflammation (a short course of oral steroids), treat any infection, and give controlled oxygen if levels are low. Many patients keep a written action plan so they know which step to take at the first warning sign — early action keeps small flares from becoming hospital stays.