hyperuracil thyminuria

hy·per·ur·a·cil thy·mi·nu·ri·a

(hī'pĕr-yūr'a-sil thī'mi-nyū'rē-ă),
An inherited disorder in which there are elevated levels of uracil and thymine in the urine; associated with a deficiency of dihydropyrimidine dehydrogenase and resultant impaired CNS function.