In the United States, those bitten are typically male and between 17 and 27 years of age. Children and the elderly are the most likely to die. Mechanics
When venomous snakes bite a target, they secrete venom through their venom delivery system. The venom delivery system generally consists of two venom glands, a compressor muscle, venom ducts, a fang sheath, and fangs. The primary and accessory venom glands store the venom quantities required during envenomation. The compressor muscle contracts during bites to increase the pressure throughout the venom delivery system. The pressurized venom travels through the primary venom duct to the secondary venom duct that leads down through the fang sheath and fang. The venom is then expelled through the exit orifice of the fang. The total volume and flow rate of venom administered into a target varies widely, sometimes as much as an order of magnitude. One of the largest factors is snake species and size, larger snakes have been shown to administer larger quantities of venom. Predatory vs. defensive bites
Snake bites are classified as either predatory or defensive in nature. During defensive strikes, the rate of venom expulsion and total volume of venom expelled is much greater than during predatory strikes. Defensive strikes can have 10 times as much venom volume expelled at 8.5 times the flow rate. This can be explained by the snakes need to quickly subdue a threat. While employing similar venom expulsion mechanics, predatory strikes are quite different from defensive strikes.
This impingement can cause pain in both upper and lower limbs and a numbness or tingling sensations in the hands and feet because the nerves are supplying sensation to their dermatomes.Osteophytes on the fingers or toes are known as Heberdens nodes (if on the distal interphalangeal joint) or Bouchards nodes (if on the proximal interphalangeal joints). Treatments
Normally, asymptomatic cases are not treated. Non-steroidal anti inflammatory drugs and surgery are two typical options for cases requiring treatment. References
External links

Mayo Clinic website concise information on bone spurs