Metabolic conditions associated with hydrops fetalis
| Lysosomal disorders |
| Mucopolysaccharidosis types IV and VII |
| Gaucher disease type II |
| GM1 gangliosidosis |
| Niemann–Pick disease type C |
| Farber disease |
| Infantile free sialic acid storage disease |
| Sialidosis |
| Galactosialidosis |
| Mucolipidosis II (I cell disease) |
| RBC enzyme abnormalities |
| Glucose-6-phosphate dehydrogenase deficiency |
| Pyruvate kinase deficiency |
| Glucosephosphate isomerase deficiency |
| Neonatal haemochromatosis |
| Respiratory chain disorders |
| Congenital disorders of glycosylation |
| Glycogen storage disease type IV |