Test: How "phantom pain" works in people with amputated limbs

May 26, 2026 · 6 min read

Question: How does "phantom pain" work in people with amputated limbs?

Perplexity

Phantom limb pain is a real sensation of pain in an already amputated limb: a person may feel burning, tingling, pressure, cramps, or "electric shocks," even though the arm or leg is physically no longer there. Most often, such sensations appear in the first few days after surgery, but in some patients, they persist for months or even years.[3][5][7]

The mechanism of this phenomenon is linked to several processes simultaneously. After amputation, severed nerves in the stump continue to send signals, and neuromas—painful growths of nerve tissue—can form at their ends, sending erroneous impulses.[4][7][9] At the same time, the brain, which previously received a constant "map" of the limb, loses its usual sensory feedback and begins to reorganize the corresponding areas; this neuroplastic reorganization can lead to the absence of a signal being interpreted as pain.[4][5][10]

It is important to distinguish between phantom limb pain and stump pain: the former is felt specifically in the lost limb, while the latter is felt in the remaining part of the limb after surgery.[1][2] Phantom sensations can also include not only pain but also a sense of the limb's presence, its position in space, or even a "shrinking" of its size—this is described as phantom perception, or telescoping.[2][5]

Sources:

Steplife — "How to Cope with Phantom Pains After Amputation"
Salut-Orto — "Stump Pain After Amputation: What is the Cause and What to Do"
INVITRO — "Phantom Pains"
Ottobock — "Therapy After Leg Amputation"

Gemini

Phantom limb pain in people with amputated limbs is a complex phenomenon associated with changes in the nervous system and brain. After amputation, the peripheral nerves that previously innervated the lost limb continue to send signals to the brain. The brain, not receiving the expected information from the missing body part, may begin to interpret these signals as pain. This process involves changes at the spinal cord and cerebral cortex levels, where sensory maps can be reorganized, creating the illusion of the presence and pain in the non-existent limb. Neuromas, thickenings of nerve tissue, often form in the stump, which can compress surrounding tissues and cause additional pain, intensifying phantom sensations.

Phantom pains can manifest in various ways, from burning, tingling, and pressure to electric shock sensations or spasms. The frequency of phantom pains varies, but according to different data, 50% to 80% of patients experience them after amputation. These pains can occur shortly after surgery or a long time later, and in a significant portion of patients, they persist for months or even years. Factors contributing to the development of phantom pains can include the presence of chronic pain before amputation, mental and neurological disorders, as well as specific disease course characteristics.

The treatment of phantom pains requires a comprehensive approach, including medication (analgesics, anticonvulsants, antidepressants), physiotherapy, psychotherapy, as well as non-pharmacological methods such as mirror therapy, virtual reality, and kinesiotherapy. It is important to note that phantom pain is a real neurophysiological problem, not a figment of imagination, and it significantly reduces patients' quality of life, affecting sleep, physical activity, and emotional state.

Sources:

Motorica.org
Apollo Hospitals
Prosthetic Center Orthoprom
Steplife
Medicasano
Premium Clinic
Russian Neurological Journal
Epilepsy and Paroxysmal Conditions
Wikipedia
SB. Belarus Today
Media Sphere
Niioncologii.ru

ChatGPT

"Phantom limb pain" is a phenomenon where a person with an amputated limb experiences pain in the part of the body that is no longer there. It is not merely an illusion but a real perception of pain associated with the functioning of the nervous system and the brain. The primary mechanism behind phantom limb pain is that the brain and spinal cord continue to receive signals from the nerves that previously innervated the lost limb. After amputation, the nerves continue to generate electrical impulses, and the brain interprets them as pain, even though the physical stimulus is no longer present.

Neurophysiological studies show that cortical plasticity—the ability of the cerebral cortex to reorganize itself—plays a key role in the phenomenon of phantom limb pain. Brain areas responsible for processing sensory signals from the amputated limb begin to receive either incorrect signals from adjacent areas, or they become hyperactive and create a sensation of pain. There is also a theory that "pain memory" in the brain preserves patterns of tolerable pain and reproduces them after amputation.

Factors that can exacerbate phantom limb pain include stress, nerve damage, inflammation in the remaining nerves, as well as psychological aspects such as anxiety and depression. Modern treatment methods include medication, neuromodulation, physical therapy, and psychological support, aimed at reducing the pain syndrome by influencing neural networks and improving brain adaptation.

Sources:

National Institute of Neurological Disorders and Stroke (NINDS)
International Association for the Study of Pain (IASP)
Journal "Pain" (Oxford Academic)

Grok

Phantom limb pain is the perception of painful sensations in an already absent limb, which occurs in a significant portion of people after amputation. Its mechanism is considered multifactorial and includes peripheral, spinal, and central components of the nervous system. At the periphery, at the amputation site, neuromas often form – abnormal growths of nerve endings that generate spontaneous ectopic impulses; these signals are transmitted along the remaining nerve pathways and are perceived by the brain as pain in the "phantom" limb. At the spinal cord level, central sensitization develops: neurons in the dorsal horns become hyperexcitable, amplifying the transmission of pain signals.

In the brain, reorganization of the somatosensory cortex plays a key role: areas previously responsible for the amputated limb begin to receive input signals from adjacent body areas (e.g., the face or torso), leading to distorted perception and the occurrence of pain. Additionally, the neuroma theory is discussed, according to which the brain stores a "body schema" even after losing a part, and the absence of sensory feedback causes desynchronization and pain. The exact causes are not fully established, but research confirms the simultaneous involvement of several levels of the nervous system.

Sources:

Phantom Limb Pain: Mechanisms and Treatment Approaches (PMC)
Pain without presence: a narrative review of the ... (Frontiers in Pain Research)
Phantom Pain: Modern Concepts of ... (Russian Neurosurgical Journal)

Claude

How Phantom Pain Works

Phantom pain is a painful sensation that arises in a limb that has been amputated but is still subjectively perceived by the patient. The incidence of this pathology after amputation is estimated to range from 44.6% to 90%. The mechanism of its occurrence is related to the fact that in the somatosensory cortex of our brain, there are areas responsible for each part of the body, and even after the loss of a body part, the corresponding area of the brain remains.

After limb amputation, the brain begins to reorganize. When signals from the limb stop arriving at the corresponding area, this area begins to experience "sensory deprivation." The brain reorganizes the sensitivity map: the area that previously collected signals from the amputated body part shifts to any other existing part and receives impulses that are interpreted as sensations of touch, pain, or pressure. Additionally, severed nerve endings in the lost body part send abnormal signals, and changes in the spinal cord's neural circuits can also cause pain.

Patients complain of a painful sensation of a phantom limb, burning, tingling, and pressure in the already non-existent amputated limb. Treatment is aimed at maintaining the normal activity of the corresponding cortical area. This is achieved through physical rehabilitation, psychotherapy, minimally invasive surgeries to implant electrodes for electrostimulation of the spinal cord and peripheral nerves, as well as mirror therapy, where a mirror is used to create the illusion of the amputated limb's presence.

Sources:

University Clinic (univclinic.ru)
Pain Treatment Institute (paininstitute.ru)
Motorica (motorica.org)
MaumScan (maumscan.com)
CyberLeninka (cyberleninka.ru)
Wikipedia (ru.wikipedia.org)

Sources:

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