She's been going through great mental pain for a long time.

她长时间以来经受着巨大的精神上的痛苦。

youdao

It is not just a natural inclination, the pressure of a person's palm within your own can actually decrease minor physical or mental pain.

这并不是一种自然倾向，其他人的手掌在你手上的压力，实际上可以减轻身体或者心理的痛苦。

youdao

Of the two, Epicurus taught, mental pain is the worse, for severe physical pain either soon abates and can be brought under control of the mind, or results in death.

伊壁鸠鲁教导人们，身体上的苦痛会快速的消退，而且可以被精神控制住，而精神上的痛苦就糟糕的多，两者控制的不好或许会导致死亡。

youdao

They look like they are sleeping. The suggestions they receive may be able to direct their whole mental energy against pain.

VOA: special.2010.03.30

There is some reason to believe that in the population known as "psychopaths," a population we'll return to later on when we discuss mental illness, this sort of instinctive empathy is broken and the pain of others just doesn't bother them very much.

我们有理由相信,在一类被称为“精神变态者“的人当中“,我们以后会继续讨论这类人,当我们讲到精神疾病时，他们就没有这种本能的移情,他们对别人的痛苦无动于衷。

耶鲁公开课 - 心理学导论课程节选

And some patients were told that the pain was not real, that they were just imagining it or that that they had mental problems.

VOA: special.2011.07.26

Kate McIver, of the Pain Research Institute at Liverpool University, said work done there on helping amputees create mental images of pain-free limbs - which operated on the same basic principle as the US research - had also proved effective.

BBC: NEWS | Health | Massage illusion helps amputees

It's much the same as mental and physical pain I suppose.

BBC: NEWS | UK | Scotland | Smoking curbs - Lung consultant

The approaches steer clear of physical pain or severe mental anguish and do not involve touching a prisoner.

CNN: Obama gives military's interrogation rules to CIA