1. Syncope
   1. CVS
      1. Vasovagal syncope
         1. Situational
         2. Micturition
         3. Cough
      2. Orthostatic hypotension
         1. Prolonged bedrest
         2. Drug induced
         3. Hypovolaemic
         4. Autonomic failure (GBS)
      3. Arrhythmia
         1. Supraventricular tachycardia
         2. Ventricular tachycardia
      4. MI
      5. PE
      6. Cardiac outflow obstruction
   2. Neuro
      1. Seizures
   3. Metabolic
      1. Hypoxia
      2. Hypoglycaemia
2. Cyanosis
   1. Central
      1. Decreased O2 saturation
         1. Severe resp. disease
         2. Pulmonary oedema
         3. PE
         4. Congenital cyanotic heart disease
      2. Abnormal Haemoglobin
         1. Methaemoblobinaemia
         2. Sulphaemoglobinaemia
   2. Peripheral
      1. Causes of central cyanosis
      2. Cold exposure
      3. Reynauds phenomenon
      4. Arterial occlusion
3. Dyspnoea
   1. seconds- minutes
      1. Pneumothorax
      2. Chest trauma
      3. Aspiration
      4. Anxiety
      5. Pulmonary Oedema
      6. P.E
      7. anaphylaxis
   2. hours- days
      1. Asthma
      2. Resp. infection
      3. Pleural effusion
      4. Lung tumour
      5. Metabolic acidosis
   3. months- years
      1. COPD
      2. Anaemia
      3. Arrhythmia
      4. Vulvular heart disease
      5. Cardiac failure
      6. Cystic fibrosis
      7. Idiopathic pulmonary fibrosis
      8. Neuromuscular disorder
      9. Pulmonary hypertension
      10. Chest wall deformities
4. Cough
   1. Acute
      1. Inhaled foreign body
      2. Rep infection
   2. Chronic
      1. Productive
         1. COPD - mucoid/purulent
         2. Bronchiectasis - purulent
         3. Pulmonary oedema - pink/frothy
         4. Lung cancer - blood stained
         5. TB - blood stained
         6. P.E - blood stained
      2. Non-productive
         1. Asthma
         2. Post-nasal drip
         3. Gastro-oesophageal reflux
         4. Drugs (ACE i.)
         5. Sarcoidosis
5. Chest Pain
   1. CVS
      1. Angina
      2. MI
      3. Acute aortic dissection
      4. Pericarditis
   2. GI
      1. Reflux oesophagitis
      2. Peptic ulcer
   3. Pulmonary
      1. Pneumonia
      2. Pneumothorax
      3. PE
   4. MSK
      1. Chest wall injuries
      2. Herpes zoster
      3. Costochondritis
   5. Emotional
      1. Depression
6. Wheeze (incl. stridor)
7. Haemoptysis
   1. Respiratory
      1. Lung cancer
      2. Pneumonia
      3. TB
      4. Chronic bronchitis
      5. Bronchiectasis
      6. Pulmonary oedema
      7. Goodpastures
      8. Wegners granulomatosis
   2. Vascular
      1. Pulmonary embolism
      2. Pulmonary hypertension (mitral stenosis)
   3. Systemic
      1. Coagulation disorders