under treatment是什么意思啊?

under treatment的意思
The report identifies the under treatment of pain and the aggressive use of "ineffectual and forced medical procedures” that may prolong and even dishonor the period of dying as the twin problems of end--of--life care.解释里说under treatment是治疗不足,对疼痛处理不够,可是我查字典里under treatment是接受治疗中,undertreatment才是处理不足的意思.倒是是句子里错把undertreatment写成了under treatment,还是under treatment本来就可以这么用?
这句子的翻译是：报告把对疼痛处理不够和大胆使用可能延长死亡期甚至让病人死的不体面的无效的和强制的医疗手段确定为临终关怀的两个问题。