The ethics of amputation by choice

"Amputee wannabes become obsessed with cutting off a particular part of their body, even though it may be healthy."
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Its called body integrity identity disorder (BIID), or amputee identity disorder. Its a rare condition, but recently two Australian philosophers have been exploring what is referred to in the article as amputaion wannabes.
The victims of this disorder have, in some cases, tried to remove the offending limb by themselves. One using a chainsaw.

Why? well, Dr. Neil Levy says-

"it may be the result of a cortical misalignment between how the brain "sees" the limb and what's really there. He says in the case of so-called "phantom limbs", people who lose a limb may experience the sensation that it's still there. This is because the way the limb is represented in the brain hasn't caught up with the physical change.
But amputee wannabes may have the limb but not the cortical representation.
"[In the case of BIID] one possibility is that there's something wrong with the cortical representation of the limb in the brain of sufferers," he says.
Levy says BIID may also be a purely psychological condition, and often people who suffer from it have had an encounter with an amputee early in life.
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the arguments in a nutshell:

for>> such amputations should be morally permissible on the grounds that people with BIID are not "globally irrational" and that they are experiencing suffering that can be alleviated through amputation.

against>> It's unethical to remove a normal limb just because somebody wants it removed.

What do you think. Are they crazy, oughta be locked up? Or are they just amputees, trapped in a horribly perfect body who should be allowed to escape?
you make the call. Read the story HERE