For Reiki to be effective, removal of certain blocks, use of healing stones, aromatherapy, massages and psychotherapy are necessary.
Mentally, one has to say good-bye to ideas and opinions that are a hindrance to the development. On the other hand one needs to encourage a fair balance of energy in a spiritual sense.
List of Limitation
But Reiki has its own limitations. It cannot heal what has already been completely destroyed. In such cases it can only support the bodily functions that can still be stimulated.
The parts of the body which have died cannot be restored by Reiki. For example Reiki cannot cure cancer. It is at most remove the despair by using creative power to have joy and provide a peaceful death.
Reiki may cause unwanted causes
But one cannot deny that Reiki does not cause disharmonies. There may be rare occasions when a risk is involved and that is based on the interaction between Reiki and other factors like chemical medicines.
Short term and Long Term Treatment
Reiki treats the whole body. But if the shortened treatment is not enough for treating disorders, the long term method should be adopted.
But a lay person should keep two options in his mind:
One should not treat the part of the spine directly above the sacrum and extending below the neck vertebrae at the base of the neck as a number of subtle body receptors are located in that part and they send the Kundalini energy from the root 'chakra' into the whole body. It can, on its part, send a false report and led the Kundalini rise under certain circumstances.
Again, very weak people should be first treated with short treatments (only 5 to 6 minutes) through soles of feet or other methods decided by physician or healing practitioner.