Is there any ongoing research for the use of low dose naltrexone in autoimmune diseases especially in the case of bullous pemphagoid.

Stetchy research: There is some sketchy research and documented experiences of MDs using low dose naltrexone for this purpose with success. Naltrexone is largely without any complications (unless you regularly take narcotic pain medication - in which case skip it.) Since there is almost no downside it is worth a try if traditional treatment is not giving you satisfaction.