Whenever you visit a doctor with some conditions or apprehensions the doctor will prescribe some medicines to treat the symptoms. Those medicines will only help in curing the symptoms. Most of the times the symptoms vanish but the deep rooted causes continue to remain. This system of medicine is well established and accepted the world over.
In case you visit a Reiki practitioner he will softly place his hands over your body parts wherever he feels fit, not necessarily at the place you are feeling hurt. You are likely to feel some heat or sensation like tingling in the area where you are being touched. At times you might find that the body pain has immediately vanished or reduced to a great extent. If the Reiki session is a prolonged one you may even fall asleep. If that is the case, your system has shifted gear and the parasympathetic nervous system (PSNS) takes over. This means that the body has entered into a state known as a state of rest, digest and rebuild or state of self healing. This all happens because of the balancing effect of the Reiki. Nothing is administered from outside so there are no side effects unlike popular medicine.