Causes of Syndrome of inappropriate antidiuretic hormone secretion (SIADH)

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 Pulmonary disease 

  • Pneumonia 
  • Tuberculosis 
  • Abscess

Malignancy

  • Lung
  • GI tract 
  • Genitourinary 

CNS

  • Tumour 
  • Infection 
  • Haemorrhage

Drugs

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