Hi Lisa. I am sorry to hear of all the trouble your husband is having. I can't say what may be causing these issues but, I will say that every symptom you mentioned, I also had right before my last revision which, turned out to be a full replacement. The whole "confused, foggy feeling" really rings a bell! I also made a trip to the ER where, I was x-rayed, CT'd, given a pain pill, and sent home. The whole time, having a disconnection in my neck and a barely functional, 23 yr old shunt. Gauging by my wife's reaction to my problems, I am convinced that shunt issues can be as tough on the spouse, as it is for those of us carrying them. My heart goes out to you both, hope Mr Dean finds relief soon.