A 9-year-old child has not been feeling well, is weak and lethargic, and has a poor appetite, headaches, and smoky-colored urine. Which additional information would the nurse obtain that will aid the child's diagnosis?

A. Rash on palms and feet is incorrect. While rashes on the palms and soles may indicate Kawasaki disease, secondary syphilis, or certain viral infections, they are not typical features of post-streptococcal glomerulonephritis (PSGN). Including this information would not directly assist in confirming PSGN. B. Cervical lymphadenopathy is incorrect. Swollen lymph nodes in the neck are usually associated with viral infections such as infectious mononucleosis or bacterial lymphadenitis, and do not have a direct link to renal pathology in PSGN. C. Joint pain is incorrect. Although some autoimmune or inflammatory conditions can present with arthralgia, joint pain is not a hallmark feature of PSGN. Its presence alone would not clarify the diagnosis of a renal complication post-streptococcal infection. D. Strep pharyngitis is correct. PSGN is a post-infectious glomerular disease that typically develops 1–3 weeks after a group A Streptococcus infection of the throat or skin. Inquiring about recent sore throat, tonsillitis, or skin infections like impetigo is critical because it provides a temporal link between the infection and the onset of renal symptoms. The classic clinical signs of PSGN—hematuria (smoky or cola-colored urine), edema, hypertension, fatigue, and decreased appetite—combined with a recent streptococcal infection, support the diagnosis.