phantom limb pain and sensation
One of the strangest and most universal experiences after losing a limb is that the limb still seems to be there. A person whose foot was amputated may vividly feel toes they no longer have — sometimes itching, sometimes moving, sometimes hurting. This is not imagination or madness; it is a real product of how the brain and nerves work, and almost everyone who loses a limb experiences some form of it.
It helps to separate two things. Phantom sensation is the painless feeling that the missing part is still present — a vague awareness of its position, an itch, a sense of warmth or tingling. This is very common and usually fades or becomes easy to ignore. Phantom limb pain is when that ghostly limb actually hurts, often described as burning, cramping, shooting, or crushing in a part that is no longer there. The brain, deprived of its normal stream of signals from the limb, seems to generate or misinterpret signals, and the body's map of itself reorganises in ways that can produce pain. (Pain felt in the remaining residual limb itself is a separate thing called residual limb pain.)
This matters because phantom pain is real suffering and is often under-treated by people who assume that, since the limb is gone, the pain must be 'all in the head' and untreatable. In fact it responds, partially, to a range of approaches: medicines that calm overactive nerves, desensitization, a well-fitting prosthesis and early use of the limb, good control of pain right around the time of surgery, and notably mirror therapy — using a mirror reflection of the intact limb to 'trick' the brain into seeing the missing limb move and relax. Reducing painful neuromas (sometimes with TMR) can help too. It is not always fully curable, but it should always be taken seriously.
A woman whose hand was amputated feels it clenched into a painful, cramping fist that she cannot relax. In mirror therapy she places her intact hand beside a mirror so its reflection appears where the missing hand should be; as she opens the reflected hand, her brain 'sees' the phantom unclench, and the cramping eases.
Phantom pain is real, not imagined — and mirror therapy is one way to coax the brain to ease it.
Phantom pain is not 'in the head' in any dismissive sense; treating it as imaginary leaves real suffering untreated, while phantom sensation (the painless feeling the limb is present) is different and usually needs no treatment at all.