question: Hello doctor, For the past one month I have been experiencing a feeling of something vibrating under my left foot. The feeling goes away when I walk, run or even rub my foot with any object. I find this quite distressing and I have been finding it very difficult to fall asleep. Two years back I was treated for severe pricking pain all over my body and a few other symptoms, one of which a rhythmic vibration, but then it was on the top of my foot but now the feeling is present at the bottom and the vibration is much less rhythmic. I was prescribed Pregabalin for a month. I was diagnozed with low levels of B12 and prescribed a daily 1000 mcg B12 supplement. I got a blood test done recently and B12 levels were normal. I am concerned about this new development as it affects my daily life. Please help me find a solution.