What Are The Causes of Breathlessness or Dyspnea

  1. Physiology:
    • Mountaineers,
    • Exercise,
    • Hyperpyrexia
    • Anemia.
  2. Respiratory:
    • Airway obstruction
    • Bronchial asthma
    • Chronic obstructive lung disease
    • Pulmonary infections
    • Pulmonary edema
    • Pulmonary embolism
    • Bronchogenic carcinoma
    • Pleural effusion
    • Pneumothorax
  3. Cardiac:
    • Acute myocardial infarction
    • Valvular heart disease
    • Left ventricular failure
    • Congenital cyanotic heart disease
  4. Metabolic:
    • Diabetes
    • Uremia
    • Hypokalemia
  5. Neurological
    • Respiratory center depression as in syringobulbia
    • Motor neuron disease
    • Guillain Barre syndrome
    • Bulbar polio
    • Myasthenia gravis
  6. Psychogenic

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