Blue diaper syndrome
The syndrome's name is derived from the fact that excess tryptophan breakdown causes formation of indigo blue and excretion into the urine, discoloring a diaper. Other symptoms include hypercalciuria with kidney stone formation, digestive symptoms, fever, and visual disturbances.
Treatment consists of a low tryptophan and low calcium diet.
For more information, see OMIM.
E72.09 – Other disorders of amino-acid transport
59531002 – Tryptophan malabsorption syndrome