Over the past 4 months, I had head spinning and backward head jerks which used to cause severe tiredness and uncomfortableness. I also get acute headache on one side. 6 months back I was diagnosed with covid and after that there was series of health issues like gastric and this head jerks. Later I was diagnosed with vitamin d3 and vitamin b12 deficiency. Now those results are moving towards normal but still I have this issue . Consulted neurologist with mri , eye specialist but there is no abnormalities. Any help would be greatly helpful.