If you're not already doing this, start keeping a calendar of when he's better & worse. Mark down acute episodes & if his work varies (exposure to different toxins & even extreme temperature on different work-sites) mark that down too. Consider your household environment, mold etc. lawn chemicals etc. I know its really worrisome and hard to know what to do. But give the doc all the info you can about when & how things seem better & worse - go with the man to his apts and maybe check out webmd.com Try not to fret too much. Sometimes a man will keep things to himself not to worry you. Just let him know you're strong, you're with him, & you need him. <3 With prayer all things are possible. Keep us posted.