While taking a BP today, my patient commented that the pressure made his hand twitch. The machine gave me an error, so I did it again, and then I saw his pinky finger twitch. Also, his fingers were turned inward, but it wasn't quite as drastic as the you tube video's I've seen for a positive trousseau's sign. Is this still a sign of low calcium? I work in a non-medical drug detox facility. A few days ago, this client was in a car accident and received no treatment. Today, he told me his hip hurts from the accident.