A 22-year-old male patient named Mahesh was admitted to the hospital with a fever and joint pain for one week. Upon examination, he had polyarthritis affecting 5 or more joints. His vital signs were stable. Laboratory tests showed normal results except for elevated liver enzymes. He was diagnosed with fever with polyarthritis and treated with antibiotics, antimalarials, NSAIDs, and IV fluids over 4 days. His symptoms improved and vital signs normalized with treatment.