Oh, I read about that treatment.

我读到过这种疗法
What's this treatment?

是什么
It's for amputees with searing pain in their phantom limbs.

是针对那些已截肢却还感觉到四肢疼痛的人
Basically, you take a patient,

基本上就是
you put them in front of a mirror

你让患者面前放面镜子
and you tell them to conduct a symphony,

然后让他们指挥交响乐
to wave, or just to relax.

招手或是单纯放松
When their brain sees what's not there,

当他们的大脑意识到他们其实已经没有四肢了
the pain goes away.

也就不会再疼痛了
And since the unsub had dead nerves in his arm

因为嫌犯由于带状疱疹抗病毒剂
due to the shingles antiviral...

导致手臂神经死亡
You could argue that his itch

可以将他的瘙痒感归结为