He needs to read the Olive Leaf book $5.95 to releive his fears and then use olive leaf and oregano properly daily for a year or so. I experiment with the syphilis history/diseases and I consider all such diseases as the same creatures and I personally would use the best of the best, but olive leaf and oregano would be good enough.
Keep in mind, if he/she has dead teeth or dental work, or even dead bones in their body, these creatures will not leave easily, it will take some super good herbs.