`  == Clarification requested: Petechiae ==  Article says:  ``A blood pressure cuff is applied and inflated to a point between the systolic and diastolic blood pressures for five minutes. The test is positive if there are more than 20 petechiae per square inch (a petechia is a small red or purple spot on the body, caused by a minor hemorrhage).``   Please clarify here: I assume that this means ``more than 20 petechiae per square inch`` in the area where the blood pressure cuff was applied.  However, I'm by no means certain of this. Thanks.    `