What are nerves?
Nerves are part of the peripheral nervous system and are responsible for making muscles work and providing sensation. Think of them as wires, sending signals throughout the body to coordinate actions and send sensory information to the brain. There are 2 types of nerves related to symptoms and disability from nerve damage:
- Sensory nerves, which carry signals from the body’s sensory receptors (your skin and muscles) to the spinal cord and brain. The information transmitted from these nerves allow you to feel pain as well as other sensations.
- Motor nerves, which carry signals away from the brain to the body’s muscles and glands. These nerves control your movements and actions.
What happens when nerves are damaged?
Nerve damage or irritation can stop signals from being transmitted to and from the brain. Since nerves are fragile, they can be damaged by pressure, stretching, or cutting. Damage to sensory nerves causes pain or altered sensation, while damage to motor nerves causes weakness. It is possible for an injury to effect both, meaning you may for example experience both pain and muscle weakness.
What is nerve pain?
Nerve pain, also called neuralgia or neuropathic pain, is a type of pain that is generated by afflictions that affect the nerves. The pain develops if the nerve is injured, compressed, or inflamed.
Inadequate nutrition like a vitamin B12 deficiency and metabolic conditions like diabetes and thyroid disease are also common causes of nerve pain.