Final answer:
Option 1). Phantom limb pain/sensation refers to a type of pain or sensation experienced in a limb that has been amputated. It occurs due to the disconnection between the sensory nerves in the residual limb and the brain. Factors such as weather changes, stress, and touch to the residual limb can trigger the pain/sensation.
Step-by-step explanation:
Phantom limb pain/feeling is a term used to describe a certain kind of pain or sensation felt in an amputated limb (option 1). The person may continue to experience pain or other feelings in the affected area even when the limb is no longer physically present. The separation between the brain and the sensory nerves in the residual limb is thought to be the cause of this condition.
For instance, even after having a limb amputated, a person may continue to experience discomfort, tingling, or itching in the missing leg or foot. This may occur because the brain interprets signals from the residual limb's surviving nerves as originating from the severed limb. The amount of phantom limb pain and feeling can vary, and it can be brought on by a variety of things, including changes in the weather, stress, or contact with the residual limb.