Pressure Point Fighting edit
This is quite simply the addition of Pressure Points to your existing Martial Arts / Combat Sports fighting. It is the study of the weak and vulnerable areas of the body and how this can enhance the effectiveness of any given technique.
In a way it is a misnomer to simply call it Pressure Point Fighting, as this is not exactly what it is. They (pressure points) are never and should never be used as a stand alone system.
They should be utilised alongside that which you already know.