Worried, but Not Panicked

This fall and winter has been harder on David than usual as he's struggled with more depression. I'm sure my issues about my dad didn't help, but he was great about giving me moral support to work through it.

David went to his regular dr. appt. and had blood tests to check lithium levels. Unfortunately his sodium levels are way too high and the lithium is low, so the dr. took him off lithium completely. He came through the withdrawal from it ok, but he's not doing very well with the depression. He says, "my body is ok, but my mind isn't."

His dr. is obviously worried and called him again yesterday to have his blood levels checked today with another dr. appt. coming soon. I haven't talked to the dr. recently, but I'm going to go to the next appt. After David stabilized, I felt that it was important that he be in control of his disorder as much as possible so I don't go to the dr. with him very often. He's good about telling me what was said, and I know I can call the dr., but with this latest wrinkle I need to talk to him about what's going on and what to expect now.

He hasn't had the wild mood swings from mania to depression that I was worried about when he stopped taking lithium, but his depression isn't lifting either. He said the Dr. told him that it was part of having the elevated sodium levels that can damage the kidneys and affect his mood. 

Have I mentioned lately how much I hate this disorder?