Causes of big toe pain include lumbar disc herniation, nerve entrapment, etc. Generally speaking, lumbar disc herniation will compress the nerve roots of the lumbar vertebrae, which can lead to numbness, pain, weakness, etc. in the innervation area of the corresponding nerve roots. Patients can do lumbar spine CT or MRI to confirm the diagnosis, and give acupuncture, physical therapy, traction, nerve nutrition, rest and other methods to relieve. It is also caused by compression of the cutaneous nerve, which is often seen in bunion patients, and is caused by the bony protrusion pressing on the nerve, as well as by wearing very tight shoes that can irritate the big toe and cause pain. The treatment is surgical excision of the bunion and wearing loose shoes to reduce localized irritation and compression.