You got my prayers for both you and your DH. It can be overwhelming when someone is 'in the pits'. It is also difficult for other people in the family. It is not easy for you. Has he seen a doctor? A blood test can determine the underlying reason. Medication does help.

While you are going through this difficult time, it does not seem that it is possible that one day it will go away. Hang in there ; it will. Do whatever you can to get help for him. I wish you the very best.

May you be given strength for now and peace at night when your head hits the pillow. I am be praying for you both.