Sorry to hear of your husbands' shingles issues, both of you.
I got shingles two months ago, but not on my head/face. Mine were in a wide band from spine around the side and ending mid-abdomen.
The scarring is still there, and with that the stabbing pains that are out of control. Sometimes I can't stand for anything to touch the area, other times it's not so bad. You never know, minute to minute. The nerves are fried from the virus, simple as that.
Will any of us eventually get relief and have the pain gradually disappear? Who knows? Doctors just guess and prescribe drugs.
I am now on LYRICA, just 100 mg. a day in two 50 mg. doses. I should take more for more comfort, but don't want more side effects. As it is I've gained weight, feel spacey and tired plus some swelling in feet and hands. Nothing bad, though, and I hope I don't have to take this for years.
I think Lyrica really does help and would recommend you see if your doctor(s) think it advisable for your husbands.
One thing I've noticed: no matter what, pain/discomfort is worse in the evenings. Is that true for your husbands as well?