Y husband is 83 years old and suffering from dizziness, tremors of the arms and legs lymphedema, copd, sleep apnea and is on warfarin for blood clots. He was advised to get a spinal tap and I’m very concerned that it may not be that necessary to find out his ailment. No one. An tell us what is wrong. He cannot walk more than 15 feet He uses a walker, transport. Hair and cane what would be the consequences of him having this test and what are they looking for.