...I would have to know the drug they used on him to give you an intelligent answer...but in the main, I don't believe it's a familial link-just individual...my mom is allergic to damn near everything and I have no such trouble...but it's ALWAYS wise to at least mention and to look at potential side effects...some treatments are more activating to your physiology than others...When my siblings and I go to doctors that want to do any procedures that include pain killers, anesthesia or relaxants especially, we always tell me about our dad as we don't know if we might have the same bad reactions. A family link or just an individual thing?
Yes, my dad was so gentle. And so kind! I guess he ripped the curtains off the wall at one point and had a nurse crying!