Vesicular Rashes

Vessicular Rashes.

Etiology

Description

Scarlet fever

Group A Streptococcus

Second disease. Diffuse blanchable erythema beginning on face and spreading to trunk; "sandpaper" skin; red "strawberry" tongue; desquamation.

Kawasaki disease

Idiopathic causes

Fissuring of lips, strawberry tongue; conjunctivitis; edema of hands, feet; desquamation later in disease

Toxic shock syndrome

S. aureus

Diffuse erythema; pronounced erythema of mucosal surfaces, conjunctivitis; desquamation 7–10 d into illness

Scalded-skin syndrome

S. aureus,

Diffuse tender erythema, often with bullae and desquamation; Nikolsky's sign

Varicella

Varicella-zoster virus

Chickenpox. Macules papules vesicles, on an erythematous base; pustules then forming and crusting; lesions appearing in crops;

Ecthyma gangrenosum

Pseudomonas

Indurated plaque hemorrhagic bulla; eschar formation; erythematous halo; axillary, groin, perianal.

Acute meningococcemia

N. meningitidis

Petechiae; numerous, enlarging and vesicular; trunk, extremities; purpura fulminans reflecting DIC

TTP

Idiopathic causes

Petechiae. Fever, hemolytic anemia, thrombocytopenia, neurologic and renal dysfunction; coagulation studies normal.