Clairsentinence
Clairsentinence or 'clear feeling' is a condition where the medium takes on the ailments or symptoms of the spirit, feeling the same physical problem which the spirit person had before death.
This same ability or 'clear feeling' is felt with those still living but it is termed 'empathy'.
Empathy or empathic responses are difficult for psychics to handle. They take careful training and experience to be able to handle and to remove/dispose of these feelings quickly.