Dear Sir/Madam, Thanks for seeking help on your issue; I have gone through your symptoms, and in my opinion, pain in hip, unrelenting in nature could stem either from infection or from arthritis, its important to know if other joints that the hip in question are also involved, and are there any symptoms of fever. Blood investigations and radiological screening of the hip joint is must to ascertain the cause of your symptoms. I hope I have been able to provide you with a satisfactory solution, if you want to clear any doubts about my opinion, feel free to contact. Special note- Any medication prescribed needs to be taken after consultation with your personal doctor only. Thanks Dr. Narender Saini