uncommon causes

Last reviewed 01/2018

Metabolic causes:

  • ketoacidosis
  • hypercalcaemia
  • lead poisoning
  • Addison's disease
  • uraemia
  • acute intermittent porphyria
  • hypertriglyceridaemia
  • drugs e.g. salicylates, non-steroidal anti-inflammatory drugs, some antibiotics, imipramine, sodium valproate, iron preparations, some anticancer drugs.

Respiratory causes:

  • pneumonia
  • pulmonary embolism
  • diaphragmatic pleurisy
  • pneumothorax

Others:

  • migraine
  • myocardial infarction
  • Henoch Schonlein purpura
  • mesenteric ischaemia
  • haemolytic crisis
  • tabes dorsalis
  • spinal disease
  • sickle cell crisis
  • hepatoma
  • angioedema
  • epilepsy