Action (more specifically isometric), not resting tremor. Triggered by various dexterity related movements of the effected pinky. Dystonia/tremor not interrupted by movement. Lasts for 45 seconds or so, then stops. Hasn't changed much since started a year+ ago (vacillates between worse and better, but isn't markedly (but perhaps slightly) worsening as a trend). No other cardinal symptoms of PD (slowness, stiffness, loss of smell, micrographia, facial masking, constipation); however, I urinate frequently and get light headed on standing (orthostatic hypotension). Some family history of PD (not parents/siblings though).
Diagnosed by neurologist with Benign Fasciculation Syndrome (BFS) however, I do not believe the type of tremor/dystonia shown in the video is BFS. It is too slow and rhythmic from what I've read.