What are the Risks?

CT is considered mostly safe. The major risk is a reaction to the iodine-based dye.

Minor reactions include:

  • Hot flashes
  • Nausea
  • Vomiting

These can often be treated well with antihistamines.

In very rare cases, more severe problems can occur. These can include:

  • Trouble breathing
  • Low blood pressure
  • Swelling of the mouth or throat
  • Heart attack