A seesaw is an example of a first class lever The fulcrum, which is the part of the lever that does not move, is in the middle. The resistance, which is the weight (person) you are trying to lift is at one end. The effort, which is the force applied to the lever, is the person sitting on the other end.
Just relax drink some milk and rub your head for 3 wishes
Answer: the answer you are looking for would be Causalgia.
Explanation: Causalgia severe burning pain in a limb caused by injury to a peripheral nerve. Causalgia is a thing that occurs after an injury, surgery, stroke, or heart attack, it isn't well understood but may have to do with abnormal inflammation or nerve dysfunction. The pain is mostly described as more than the thing that caused it, the pain areas consist of pain in the nerves, arms or legs, back, foot, or hands. muscle symptoms would be rhythmic muscle contractions, loss of muscle, and or muscle spasms, sensory symptoms such as sensitivity to pain, or uncomfortable tingling and burning, and the whole body is nervous system dysfunction or sweating.
hoped this helped! have a nice day <3