I had a spinal tap back in January to determine whether I have MS, which apparently, I do. The neorusurgeon did the ST, only to be unable to draw any fluid. They sent me down to XRAY, and another technician, or doctor, froze me again, and successfully drew the fluid.
I had no symptoms whatsover. For approx two days, when I coughed, either due to the cold weather, or smoking, I guess the latter, I felt a second of pain in my head, and then disappered rather quickly.
Other than that, nothing. No MS symptoms either.