A
- Acute respiratory distress syndrome
- Acute silicosis
- Acute sinusitis
- Adenovirus infection
- ARDS
- Allergic bronchopulmonary aspergillosis
- Allergic rhinitis
- Anaphylaxis
- Angioedema
- Angioneurotic edema
- Asbestosis
- Aspergillosis
- Aspiration pneumonia
- Asthma—adult
- Asthma—child
- Asthma—living with asthma
- Atypical pneumonia
-
P
- Persistent pulmonary hypertension of the newborn
- Pertussis
- Pharyngitis/tonsillopharyngitis
- Pleural effusion
- Pleurisy
- Pleuritis
- Pneumonia
- Pneumonia, atypical
- Pneumothorax
- PPHN
- Primary pulmonary hypertension
- Pseudohypertrophic muscular dystophy
- Pulmonary arterial hypertension
- Pulmonary embolism
- Pulmonary fibrosis