Final answer:
The primary treatment for pyelonephritis is antibiotics.
Step-by-step explanation:
The treatment for pyelonephritis primarily consists of antibiotics. Pyelonephritis is a serious kidney infection that is often caused by bacteria from infections in the urinary tract. Antibiotics such as penicillins, cephalosporins, fluoroquinolones, and vancomycin are commonly used to treat pyelonephritis. Other treatments like OTC painkillers, surgical correction, or warm moist compresses may be used to manage symptoms or in severe cases, but antibiotics are the recommended primary treatment.