In the few cases where hemolytic toxins cause death the actual cause is likely to be shock. The effects of hemolytic toxin are immediate and primarily localized. Symptoms will be obvious. Neurotoxins produce much less obvious immediate symptoms, at times fooling the victim into believing envenomation has not occurred. However symptoms can appear later.
Neurotoxins produce much less local reaction than do hemolytic toxins.
However they can affect nerves quite removed from the site of the bite. In extreme cases they can cause respiratory arrest although this is uncommon with most North American snakes. However respiratory distress without actual arrest is likely to occur in neurotoxin victims. Less severe symptoms from neurotoxins include tingling or prickly feelings and eyelid paralysis. All snake venom probably has some of each kind of toxin.