(1) Tyrosinemia type II – Corneal ulcers, hyperkeratosis, occasional intellectual disability.
(2) Tyrosinemia type III – Possible intellectual disability.
(3) Alkaptonuria – Ochronosis, black urine.
(4) Maleylacetoacetate isomerase deficiency – Phenotype?
(5) Tyrosinemia type I – Liver failure, renal damage.