Consultation. Stone nhi aayaa kidney me!

Hello doctors ...this is about my brother 15 yr old ...having sooo muchh pain in the back ...pain radiating from right side of umbilical region and radiates towards back ...the pain is sooo much severe and usually last for 30 minutes ...jab bhi pain hota hai to injection dena pdhta haii ...kisi bhi report me kuchh bhii nhii haii ...ct scan mri sab karva liyaa ...nephrologist urologist sab se mile hai parrr kuch diagnose nhi hua ...ye neurologicall pain ho sktaa hai kya ...reports me sabb normall haii ..bohot doctor se consult kra ...parrr kuch nhii ho rhaa diagnose ...abhi bsss ye btao kii kis doctor k passs jaaye ...f First time ...last year hua tha ...fir poore sal me ek do bar hi hua . .orr abhi last 15 days ne 10/12 baaar huaa ...bohot severe pain hota hai ekdm bhi tolerable nhii hotaaa Please suggest what we do next please suggest Jab phli baar dard hua tha tab diagnose me kidney stone tha and doctor said ki kedney stone ka pain haii .. Prr iss barr stone nhi aayaa kidney me