| HHH | hyperornithinemia, hyperammonemia, homocitrillinuria [syndrome] |
|---|---|
| HHH Syndrome | Hyperamnonemia-Hyperornithinemia-Homocitrullinemia Syndrome |
| HHHH | hereditary hemihypotrophy-hemiparesis-hemiathetosis [syndrome] |
| HHHO | hypotonia, hypomentia, hypogonadism, obesity [syndrome] |