<unk>  is a very common rash in infants. It appears in up to half of newborns carried to term, usually between day 2-5 after birth.
Erythema toxicum
Granuloma faciale
Ichthyosis bullosa of Siemens
Papuloerythroderma of Ofuji
Erythema dyschromicum perstans
Erythroderma
Erythema elevatum diutinum
Phytophotodermatitis