Yes, this is exactly what I am talking about. The first-born in each generation of my family all have this. And the same allergic reaction to what is commonly refered to as "Truth Serum," Sodium Pentothal, which is used for anesthesia during surgery and oral surgery. My grandfather, father, myself & my son all have problems with it. My son had surgery & nearly died when a doctor decided that a synthetic form of the drug would be fine. Obviously, it wasn't.

Novacaine...ahh, the stories I could tell...I have one dentist, who was filling in for my regular dentist, who thought that it must be a misprint on the part of the medical transcriptionist, so he opted for only using half the dosage for my last root canal. Neither he or I will ever forget it.

Maybe this is another one of those Ripley's Believe It Or Not episodes?