What Could The Head Discomfort Of Unknown Origin Be?

I have an uncomfortable awareness of a ropy feeling in the left side of my head. I had an MRI and nothing showed up so I know it s nothing malignant. Doctors can feel it but not sure what it is. My last doctor told me to give him a few days to research. I went to a neurologist who said it was occipital neuralgia but I don t agree as I don t have any burning sensation. I got a nerve block to see if it would help and it didn t. I am frustrated from dealing with this annoying feeling. Any advice on what I should do? Thanks