Post-streptococcal glomerulonephritis (PSGN) is an immunologically-mediated sequela of pharyngitis or skin infections caused by nephritogenic strains of Streptococcus pyogenes. S. pyogenes are also called group A Streptococcus (group A strep). The clinical features of acute glomerulonephritis include: -Edema (often pronounced facial and orbital edema, especially on arising in the morning) -Hypertension -Proteinuria -Macroscopic hematuria, with urine appearing dark, reddish-brown -Complaints of lethargy, generalized weakness, or anorexia