HI, thanks for using healthcare magic
It is possible that the pain may be
neuralgia which is nerve related pain. Neuralgia is sometimes described as stabbing in nature.
It may also be burning, sticking,
tingling, sharp in nature in some persons.
There are different causes such as: (1)
vitamin b12 or
folate deficiency
(2)diabetes
(3)trauma to the nerves eg if they are compressed by the surrounding bones and muscles
(4)liver or kidney disease
(5)exposure of toxins
(6)neurological conditions such as
stroke and ms
Bloods tests and imaging of lower back would be needed to find the exact cause.
Blood tests may include diabetes screening, screening for liver or kidney disease, vitamin b12 and folate level
I hope this helps