Hi, My vitamin d3 is low(14.37) then I feel vertigo when I wash my head and stand long also, unable to walk for 10 mints feeling weakness in the legs, sometimes nose block on right side. When I did CT scan I saw sinus infection. As Iam  working from home since 3 years unable to go outside. Getting anxiety and sometimes jerk in sleep only afternoon Numbness in legs and hands Severe headache and back pain Want to get rid of those.