usually they are chronic and serious, of which most medical personnels have never heard. Pharmas are not interested in them because there is no much financial incentive.
This is one aspect that why there are so many alternative medicines, including Chinese medicine, because the main stream medicine is hopeless and helpless in dealing with orphans. what a shame.
Under the name of heaven, they who are suffering will be given an equal opportunity for a place where god can take care of them indescriptively , Amen, ha.