Clinical Vignette 77 | MIPHIDIC

More a spot diagnosis than a vignette per se.

Urine in the urine bag and tubing. There is no overt bleeding.


  1. What condition is being treated here?

[Updated 29th September 2017]

This is quite a classic – bright orange urine as a result of rifampicin ingestion (for tuberculosis). Sweat and tears may also be orange as a consequence. I could not really find out why this happens however! The effect usually does not last the entire day, and will stop once rifampicin is discontinued. While potentially visually disturbing to patients who are not counselled (or who have forgotten) about this side effect, it is an essentially harmless phenomenon.

There are several other causes of orange urine, including food dyes, sulfasalazine, and phenazopyridine.

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