What Causes Hands Jerking With Involuntary Muscle Twitching?

My third finger on both hands jumps(jerks) downward involuntarily when I hold hands out to type(hunt and peck typing really). I saw a commercial about a depression drug that can cause this as a side effect. Latuda was the drugs name. Do you know of any meds that can cause involuntary muscle twitching in fingers if taken for a long periods of time?