What causes blue, green or black urine?

Blue urine can be seen in cholera, typhoid, typhoid fever, as well as in primary hypercalcemia and vitamin D intoxication. In addition, this blue urine is associated with the use of certain drugs, such as the use of amphotericin, methylene blue, indigo red, pomegranate oil, salicylic acid can appear after the discontinuation of the drug can disappear. Green urine is seen in the urine of Pseudomonas aeruginosa breeding, or bilirubin urine placed too long, oxidized into bilirubin caused. Pale green urine can also be caused by taking a lot of anti-inflammatory pain. Black urine is relatively rare, often occurs in patients with acute intravascular hemolysis, such as falciparum malaria patients, medically known as black fever urine, is one of the most serious complications of falciparum malaria. This patient’s plasma contains a large amount of free oxygen, hemoglobin and methemoglobin, which is excreted with the urine and causes the urine to be dark red or black. A few other patients take levodopa, cresol, phenylhydrazine and other drugs, will also cause black urine, after stopping the drug will disappear.