<s>[INST] my father was bitten by a copperhead snake thursday. he spent from late thursday night until about 3 pm sunday in the hospital being monitored. No antivenin was administered due to the fact he only has one kidney and a previous heart attack . was bitten on the hand...swelling was on hand, arm up to and past the elbow... but down dramatically when released on sunday.Swelling still down now as well. Is now experiencing bad pain since about 5 am this morning, chilling, and lungs feel odd.   Is this normal? [/INST] Thanks for asking in healthcaremagic forum   In case of snake bite, if poisonous anti-venom is administered irrespective of your condition to save the life. In fact snake venom can cause kidney damage. So, you are not aware of the treatment details. Please consult your treating doctor regarding this. All the best. </s>