I am 19 and have a VP shunt, last one revised in 2009. I have recently (past 7 months) been having headaches, stomach pain, and pain along my shunt tubing but no redness, swelling, or sickness. I have had multiple X rays and cat scans, but my neurosurgeon seems confident that nothing is wrong. Recently the site of my stomach incision has been tender and a bit sore, not red or swollen. Is it normal for scar tissue to feel sore / tender at times? I do have the flu at the moment, but I usually have no other symptoms other than just a sore incision site and soreness along neck tubing. I have the shunt for hydrocephalus and it was placed originally at birth.