Phantom Limb Pain
The pain referral patterns of trigger points can explain this phenomenon which can be distressing and inexplicable unless you know about this. For example trigger points in the quadracep muscles of the front of the thigh, which normally send pain to a person's knee, may still send pain to that area in someone who has had their leg amputated above the knee. Trigger points in muscles in the upper part of the lower leg can send pain to an amputated foot or ankle area, and trigger points in the scalene muscles of the side of the neck can cause phantom pain in a missing hand or arm.
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