Final answer:
Neuralgia often occurs in the legs, specifically the posterior part, which is supplied by the sacral plexus including nerves like the tibial and sciatic nerve (3).
Step-by-step explanation:
Neuralgia, or nerve pain, can occur in various parts of the body, each innervated by different nerves. According to the information provided, nerve plexuses supply different areas. The tibial nerve and the sciatic nerve are part of the sacral plexus, which supplies nerves to the posterior leg, often a site of nerve pain. Therefore, neuralgia occurs most frequently in the legs, specifically the posterior part which is innervated by the sacral plexus. The lumbar plexus affects the anterior leg, the brachial plexus the arms, and the cervical plexus the posterior head and neck.
The nerve pain known as neuralgia occurs most frequently in the head. The cranial nerves, which innervate the head and neck, can be affected and result in neuralgia. Examples of cranial neuralgia include trigeminal neuralgia (affecting the trigeminal nerve) and occipital neuralgia (affecting the occipital nerves).