Your experience mimics my own, muscle twitching started after I went on TRT, after 3 months on TRT I had crazy repetitive muscle twitching throughout my body, mostly legs. Minutes ago I had a itch on my shoulder blade, then muscle started twitching. It used to be a lot more frequent but as time goes on it's lenssoning, it's possible since it happened before TRT and that TRT is only exacerbating an existing undiagnosed medical condition. Were your muscles soft and wasting before you started TRT? Mine were found wasting by neurologist.