If there are any type of "embarassing" information you need to know, try gaining it through a conversation with the patient. The other day we had a call that came in as an overdose. Pt. took a little more than 1/2 a bottle of tylenol. I figured more than likely she was attempting to kill herself, but I wanted to find out for sure. En route I was talking with her and through the conversation she told me she was indeed trying to end her life. Worst case scenario you can straight-up ask the patient, but I prefer trying to reveal private information through a casual conversation en route or on scene.