I had my shunt placed in 1979. I was two months old at the time. As a child in the 1980's I had several revisions on the shunt for blockage issues. I can't remember exactally when I wuit having issues but I went thru my teenage years with no issues at all. I went thru my twenties with no problems as well. When iI turned 30 I started having mild headaches that i thought were nothing major and last June I ended up in the hosital after over 20 years with mo problems. They discovered my tubing had broke in my stomach. It made mw feel like I had the flu. They had to do surgury once again. They were not able to pull out the old tube due to all the scar tissue around it but I not am the proud owner of two shunt lines and am doing just fine. I hope you are doing well and I hope this was helpful.