Kidneys are organs which cleans the body physically, therefore a dream about kidneys can indicate a need for emotional or spiritual cleansing.
If you dream about kidneys, you may need to remove a negative influence from your life.
A dream that you have pain in your kidneys can mean that someone very close to you is causing you pain in real life, but that you may not be aware of this or refuse to accept that it is true.
Having a kidney removed in a dream can represent letting go of a negative aspect of your life.
Hurting another person’s kidneys in a dream can mean that you are worried that this person is engaging in destructive behavior.