HI, thanks for using healthcare magic
If the x ray and blood tests did not reveal any abnormalities, it is possible that his symptoms may be due to issues with the nerves in the area.
Nerve dysfunction (abnormal function) can be a cause of
severe pain. This can be temporary or permanent.
Some causes include: (1)low levels of
vitamin b12 or folate
(2)abnormal levels of vitamin b6, low or high levels can do it
(3)diabetes
(4)trauma
(5)
liver or
kidney disease
(6)infection
(7)side effect of medication
(8)neurological conditions
It would be best, since all the other tests are normal, to consider taking him to see a
neurologist to find the cause of his pain.
Nerve conduction testing may be needed.
I hope this helps