Just an update here, and good news:
Atreides' wounds are getting smaller and smaller, and soon he will be free of bandages! The staff at the hyperbaric chamber center is amazed at the way and the speed at which he is healing. They told us that for wounds this magnitude, it would take a normal person 6 months to heal without the chamber, and about 4 with the chamber. But he is almost healed up after 2 months. :D
They are so anal about "standard diets" that in order to be left alone, we claim he is following their dietary advice, which is BS. But we do wonder if the keto diet isn't contibuting big time to this speedy recovery. He also hasn't had any recurrence (touch wood), even though it seems to be pretty common after a surgery for others areas around the wounds to act up a bit. And he used to have a tooth infection, but its all gone! The dentist confirmed that the hyperbaric chamber is likely to be the reason (so, if anyone here has some recurrent infection, the hyperbaric chamber is highly recommended!)
They also claim that smoking right after going in the chamber counteracts all effects, and no matter how many times we have pointed out the falseness of that statement, they keep repeting like robots that we are wrong. Well, given that he smokes every time after the chamber, he should have healed in one week if he had forgone the "vice" ! Yeah, yeah...
Another good piece of news is that a few days ago Hélène from Solidarité Verneuil told me that recently a young woman had contacted her, and is now fortunately in touch with Dr. Guillem and scheduled for surgery. And she found their site and the doctor's contact info in our forum! I have no idea who this person is, but she is French, and was looking for information in English since she couldn't find much in her mother tongue. So, this thread has helped another person. :D
From what Hélène said, even though the official figure here in France for HS is 4% of the population, they are getting so many calls that she thinks it's probably much higher. It wouldn't be surprising, given how painful and hard it is to talk with anybody about it. Her team is doing a great job, and it's heartwarming to see that some people care. They recently won a national award in recognition for their patient care program, and will be hiring somebody because they have too much work (they are all volunteers).
Finally, talking to several people with HS, it seems that most of them are aware of a certain sensitivity to gluten and dairy. Some eat lots of meat and fat, and recommend it. Some have seen positive effects. Even if it is just a "mechanical" issue, and not a "disease", I'm sure that having a good diet can only help!