Coxsackievirus type A: Hand-foot-mouth disease.- Oval-shaped vesicles on palmes and soles; vesicles and ulcers in oral mucosa

Human herpesvirus 6: Roseola (exanthema subitum)- Asymptomatic rose-colored macules appear on body after high fever; can present with febrile seizures

Measles virus: Measles (rubeola)- Confluent rash beginning at head and moving down; preceded by cough, coryza, conjunctivitis, and Koplic spots on buccal mucosa

Parvovirus B19: Erythema infectiosum (fifth disease)- "Slapped cheek" rash on face (can cause hydrops fetalis in pregnant women)

Rubella virus: Rubella (German measles)- Pink macules and papules begin at head and move down, remain discrete

Streptococcus pyogenes: Scarlet fever- Erythematous, sandpaper-like rash with fever and sore throat

Varizalla-Zoster virus: Chickenpox- Vesicular rash begins on trunk; spreads to face and extremities with lesions of different stages