What’s Phantom Limb Syndrome?
Phantom limb syndrome appears when a person with an amputation continues feeling the amputated or missing limb. Despite the amputated limb no longer existing, the brain still believes the body part is there.
The sensations the patient feels are pain, itching, heat, and pressure. They can suffer all of them together or one at a time. It doesn’t always manifest in the same way.
Physician Silas Weir Mitchel first described phantom limb syndrome. This professional cared for wounded soldiers in the North American Civil War, many of them amputees due to war injuries. He observed that many of them suffered from phantom limb symptoms.
The sensations are so frequent that experts estimate that up to 85% of amputees suffer from the condition. Over time, it becomes less apparent. However, it can last several decades after amputation.
Forms of presentation of phantom limb syndrome
Phantom limb syndrome can manifest in three different ways:
1. Residual limb pain
When a limb is amputated, a stump remains. This stump has nerve endings which can cause pain, as the brain simulates the location of the part of the limb that’s no longer there. Inflammatory fluid or blood can collect in the stumps, contributing to the pain.
2. Phantom limb sensation
As soon as the amputation is completed, during the first month afterwards, almost all amputees perceive the limb is still attached. It’s a sensation, not pain.
Keep discovering in this article: Congenital Insensitivity to Pain: What Is It?
3. Phantom limb pain
This is the most bothersome clinical form and the hardest to treat. Along with pain due to a limb that no longer exists, there may be a sensation of itching or high temperature. It’s quite persistent over time, and there are still scientific discussions about its real origin. In other words, if it’s due to the peripheral nerves or the brain.
Why does this syndrome happen?
Phantom limb syndrome is due to the representation that the brain has of the body. To function on a daily basis, the brain develops a body schema of how we are externally.
When a limb is amputated, the body structure that the brain assimilated prior to amputation persists. For the brain, the limbs remain in the same place, until it assimilates a new structure.
The development of the new schema is slow and the signals confuse the neurons. All the new sensory information overwhelms the brain, which has to re-learn the body it’s in.
In neurological terms, we’re talking about somatosensory memory. This memory of the nervous system is fed from the moment we’re conceived with the sensations that we perceive.
In other words, the experiences of pain, heat, cold, itching, and discomfort, among others, help the body to perceive itself.
The symptoms of phantom limb syndrome
The patient reports the signs of the presence of phantom limb syndrome. The doctor diagnoses the amputee when they explain what they’re feeling. Here are the most common symptoms amputees suffer from:
- Extreme hot and cold temperatures
- Feeling that the non-existent limb is doing something, such as moving the fingers or placing itself in a particular position
- Telescoping – the feeling that the phantom limb is gradually shortening over time
Keep reading to learn more: This Model Had Her Leg Amputated Because of a Tampon
There are two treatment options for phantom limb syndrome. Doctors must use both. The first is pharmacological and the second comprises therapies and techniques.
The pharmacological approach consists of pain killers and analgesic adjuvants. Doctors prescribe antidepressants, neuroleptics, and regulators of synaptic transmission.
Regarding non-pharmacological therapies, kinesiotherapy, electrical stimulation, mirror therapy for neurons and the nervous system, and even brain surgery can prove helpful. However, no technique is completely effective at easing symptoms.
Scientific studies suggest that correct preoperative pain management to amputation could help. The use of preoperative continuous regional analgesia during the amputation could prove helpful.
This approach isn’t easy and is still being studied. Advances in the understanding of the causes and pathophysiology of the brain have led to advances in the discovery of the origin of phantom limb syndrome.It might interest you...