Streptococcus

Gram stain morphology: Cocci in pairs and chains clusters tetrads rods( chains, clusters, tetrads, rods )

Colony Morphology of streptococcus: smooth wet bumpy( smooth, wet, bumpy ), domed, translucent, and sometimes dry sticky gummy creamy( dry, sticky, gummy, creamy )

Scarlet Fever Impetigo Step Toxic Shock Rheumatic fever Acute Post-strep glomerulonephritis( Scarlet Fever, Impetigo, Step Toxic Shock, Rheumatic fever, Acute Post-strep glomerulonephritis ) usually appears within 1-2 days after pharyngitis appears. Occurs most often in children between 2 and 10 years of age. Characteristic rash- first appears on side of neck, spreads over chest and abdomen and finally covers extremities. Diffuse erythema with superimposed punctuate red spots. High fever.

Impetigo (pyoderma) Scarlet Fever Rhuematic Fever Acute Post-strep Glomerulonephritis Strep Toxic Shock( Impetigo (pyoderma), Scarlet Fever, Rhuematic Fever, Acute Post-strep Glomerulonephritis, Strep Toxic Shock ) begins with an outbreak of vesicular lesions on arms and legs, nose, mouth, throat, scalp. Lesions soon become pustular and in time are covered by a thick crust of a dark yellowish color. Patient may complain of itching.

Strep Toxic Shock Impetigo (pyoderma) Scarlet fever Rheumatic fever Acute post-strep glowerulonephritis( Strep Toxic Shock, Impetigo (pyoderma), Scarlet fever, Rheumatic fever, Acute post-strep glowerulonephritis ) causes necrotizing fascitis. progressive, rapidly spreading, inflammatory infection of deep tissue. Necrosis quickly spreads along deep fascial plane. High mortality rate

Rheumatic fever Scarlet Fever Acute post-strep glomerulonephritis Impetigo ((pyoderma) Strep Toxic Shock( Rheumatic fever, Scarlet Fever, Acute post-strep glomerulonephritis, Impetigo ((pyoderma), Strep Toxic Shock ) is a major problem in developing countries. Usually follows pharyngitis, can occur a few days to 5 weeks post strep infection. May lead to chronic, progressive damage to heart valves. Patient may need to be placed on antibiotics for life.

Acute Post-strep Glomerulonephritis Scarlet Fever Rheumatic Fever Impetigo (pyoderma) Strep Toxic Shock( Acute Post-strep Glomerulonephritis, Scarlet Fever, Rheumatic Fever, Impetigo (pyoderma), Strep Toxic Shock ) is characterized by acute inflammation of renal glomerulus with edema, hypertension, hematuria, and proteinuria.