I had Covid over 3 months ago… October 2022. I noticed a head tremor on day one of being sick. I’ve been to 4 doctors. It doesn’t happen when im resting and only certain times a day . After a few weeks I started feeling the internal tremors in my head and arms and shoulders… feels like I’m shaking but not visible. Sometimes they last for hours. Some days I feel fine and think it’s going away , but then it’s back the next day. The visible head tremor does seem to be less visible so I hope it all goes away. I tried taking antihistamines as some have suggested but they made me so sleepy… even the non drowsy ones. Some say theirs went away after a year so I’m hoping .