Related by context. Frequent words. (Click for all words.) 75 respiratory illnesses 68 lung diseases 64 respiratory diseases 62 respiratory illness 61 respiratory 61 respiratory infections 60 ailments 60 breathing difficulties 58 illnesses 58 respiratory symptoms 58 lung disease 55 skin rashes 54 asthma 54 sinus infections 53 respiratory distress 53 chronic illnesses 52 lung infections 51 bronchitis 50 chronic respiratory 50 rashes 50 pulmonary disease 50 sicknesses 50 pneumonia 50 chronic lung 50 respiratory tract 49 sore throats 49 allergies 48 emphysema 48 chronic diseases 48 colds 48 sinusitis 48 fevers 47 toxic fumes 46 pollutants 46 asthmatics 46 asbestosis 46 upper respiratory infections 46 respiratory infection 46 heat exhaustion 46 toxins 46 asthmatic 45 skin irritation 45 lung infection 45 air pollution 45 allergic reactions 45 particulates 45 lung 45 sore throat 45 diseases 45 carcinogens 44 symptoms 44 flulike symptoms 44 maladies 44 viral infections 44 sarcoidosis 43 chronic bronchitis 43 acid reflux 43 breathlessness 43 diarrhea 43 skin lesions 43 carbon monoxide poisoning 43 upper respiratory 43 particulate matter 43 compromised immune 43 soot 43 ear infections 43 birth defects 43 gastrointestinal illness 43 difficulty breathing 42 cancers 42 shortness 42 cataracts 42 kidney disease 42 skin rash 42 infections 42 diesel exhaust 42 kidney stones 42 kidney failure 42 asbestos exposure 42 fungal infections 42 hay fever 42 viral infection 42 nosebleeds 41 ailment 41 bedsores 41 carcinogen 41 smoke inhalation 41 lungs 41 weakened immune systems 41 carbon monoxide 41 renal failure 41 ozone pollution 41 toxic substances 41 nasal congestion 41 weakened immune 40 carpal tunnel syndrome 40 deep vein thrombosis 40 bloody diarrhea 40 inhaling 40 sinus 40 bacterial infection