ETIOLOGYOF COUGH
CAUSES         Respiratory CauseCOUGH          Non-respiratory Cause
RESPIRATORY CAUSE   Airway irritation   Aspirated material   Inflammation   Infiltration   Constriction of airway   ...
AIRWAY IRRITANTS   EXOGENOUS       Smoke, dust, fumes, foreign bodies   ENDOGENOUS       Upper airway secretions, gastri...
INFLAMMATION   Airway infection        viral or bacterial   Bronchitis, bronchiectasis   Asthma, cough variant asthmaIN...
BASED ON DURATION          ACUTE (<3 Weeks)  COUGH          CHRONIC (>3 Weeks)
ACUTE   URTI, common cold, inhaled foreign    body, inhalation of irritant dust or fumes   Pneumonia, pulmonary    embol...
CHRONIC   GERD   Asthma   Post nasal drip   COPD   Bronchogenic carcinoma   TB   ILD   ACE inhibitor
ORIGIN   Pharynx – post nasal drip   Larynx – laryngitis, tumor, whooping cough   Trachea – tracheitis   Bronchi – bro...
NON-RESPIRATORY CAUSES PRESSURE ON TRACHEA OR BRONCHUS          Aorticaneurysm, cardiomegaly, mediastinaltumor, lymph nod...
Etiology of cough
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Etiology of cough

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clinical approach to a patient with chest pain

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Etiology of cough

  1. 1. ETIOLOGYOF COUGH
  2. 2. CAUSES Respiratory CauseCOUGH Non-respiratory Cause
  3. 3. RESPIRATORY CAUSE Airway irritation Aspirated material Inflammation Infiltration Constriction of airway Parenchymal lung diseases - Interstitial Lung Disease, Pneumonia, Lung abscess Drugs- ACE inhibitor, beta blockers, NSAID
  4. 4. AIRWAY IRRITANTS EXOGENOUS Smoke, dust, fumes, foreign bodies ENDOGENOUS Upper airway secretions, gastric contents
  5. 5. INFLAMMATION Airway infection viral or bacterial Bronchitis, bronchiectasis Asthma, cough variant asthmaINFILTRATION Bronchogenic carcinoma Infiltration with granulomas- endobronchial sarcoidosis, TB
  6. 6. BASED ON DURATION ACUTE (<3 Weeks) COUGH CHRONIC (>3 Weeks)
  7. 7. ACUTE URTI, common cold, inhaled foreign body, inhalation of irritant dust or fumes Pneumonia, pulmonary embolism, CCF, bacterial sinusitis
  8. 8. CHRONIC GERD Asthma Post nasal drip COPD Bronchogenic carcinoma TB ILD ACE inhibitor
  9. 9. ORIGIN Pharynx – post nasal drip Larynx – laryngitis, tumor, whooping cough Trachea – tracheitis Bronchi – bronchitis, COPD, asthma, bronchogenic CA Lung parenchyma – TB, pneumonia, bronchiectasis, pulmonary edema, interstitial fibrosis
  10. 10. NON-RESPIRATORY CAUSES PRESSURE ON TRACHEA OR BRONCHUS Aorticaneurysm, cardiomegaly, mediastinaltumor, lymph node CVS – pulmonary edema, mitral stenosis GIT – GERD Reflex causes – foreign body Psychogenic causes

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