Confirm the diagnosis of PCT by: history and physical examination, elevation of urine or plasma porphyrins (which excludes pseudoporphyria), and further tests to specifically diagnose PCT and exclude other porphyrias.[1][9] It is important to confirm PCT biochemically and exclude other less common porphyrias, which can also cause the same blistering skin lesions.

BMJ Best Practice is an evidence-based point of care tool for healthcare practitioners.

To continue reading and access all of BMJ Best Practice's pages you'll need to log in or start a free trial.

You can access through your institution if your hospital, university, trust or other institution provides access to BMJ Best Practice through either OpenAthens or Shibboleth.

Use of this content is subject to our disclaimer