 [ Symptoms ] i have exhausted my unemployment benefits and i have not worked in the last 3 years  i am 56 years old without any source of income what should i do about medical insurance how can i obtain medical insurance in texas without any type of income [ Disease ] i am sorry you are going through this certainly a lumbar puncture is nobody is idea of a good time white matter brain disease is not a single diagnosis actually there are several diseases that affect the white matter of the brain i suspect your neurologist is trying to determine if you have one of those diseases or not i would suggest you discuss your concerns about the lumbar draw with your neurologist ask him why he feels it is necessary and what he is trying to learn from it ask him if there are other non invasive tests that could be done instead do not be afraid to express your fears or concerns with him or her you are the patient and you deserve to have all your questions answered i wish you all the best with this