 [ Symptoms ] veins are not visible for the blood test what to do  my mom is 61 years old and in every few months she have a blood test her veins are not much visible so the doctors have to pierce at many places can anybody suggest what exercise she can do so the veins becomes more or easily be visible or is there any food which she can take before blood test i do not want her to suffer the pain of piercing at different places any help will be appreciated thanks [ Disease ] yes you can get just the sensitivity i have had the all the symptoms to the extreme of being temporarily paralyzed had all the tests done started getting them when i was 15 that was 32 years ago and they have changed over the years i do get many silent migraines