Evan had one spell very similar to that. Surprisingly, it was at about the same age. The difference was, it was right after he had the chicken pox. I always associated it with all the oatmeal baths or the fever. I really don't know. Unfortunately, it didn't last very long. We just continued to take care of his skin as normal. We did continue with the oatmeal baths for a while thinking maybe that had played a part. The good news was, even at 8 months, Evan made it through the chicken pox with flying colors.
I do know how bittersweet it is. Our mother's hearts want to believe it will stay that way.