What causes pain in the lower back?
Patient: I have pain in my lower back (flank?) but above my butt. Like right where the kidneys are. The pain is moderate and constant, aching and radiates around to my lower pelvic area. I m 10 years out of menopause, so it s not period pain. I am nauseous and seem to tire easily. The pain started about 1 wk ago. Recently, I was treated for a severe cat bite to my right big toe with surgery followed by IV antibiotics (Invanz for 6 wks} via a picc line. My infectious disease Doc then put me on Augmenten for another 2 months. If it was say.... a kidney infection, wouldn t the oral antibiotics clear that up? I have no dysfunction with urination. And I might add that I am a diabetic. Doctor: Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. Can be postural muscle spasm or a disc prolapse.  I hope this information has been helpful for you. Regards,  Dr. Praveen Tayal