my son was born with a unilateral partial cleft lip, with pianital cyst that has to be lanced since 18 on and off, now has a fused L5, bulging L3, he is 28 6ft 3in, He has had severe on and off back pain for 10 years, and now is unable to be out of pain and cant perform normal care for his infant son. Is there any specialist he should see?