Clairvoyance simply means clear seeing. Most the visions usually take place mentally, in your mind. If you are gifted with fleeting images, you may be clairvoyant.
A psychic medium does psychic readings by picking up on energy and instantly telling the person what he or she is seeing or feeling. The energy can come to the psychic medium in the form of visual signs or feelings. Psychic medium readers often pick on people who have crossed over, but many can also pick up on a person's energy who is still here in the physical world. Psychic medium readings are good for closure. A psychic medium can help a client deal with the closure of a business situation, personal relationship, or dealing with the passing of a loved one.