Normal Dermatologic Findings

Erythema Toxicum NeonatorumBenign, self-limiting, asymptomatic

disorder of unknown etiologyOccurs in up to 50% of infantsPresents at 24-48 hours of lifeSmear of pustule reveals eosinophils

Pustular melanosisSelf-limiting dermatosis of unknown

etiologyUsually presents at birthDisappears in 24-48 hours leaving

pigmented macules with a collarette of scale

Hyperpigmentation fades in 3 weeks to 3 months

Mongolian SpotFlat, slate-gray to bluish-black poorly

circumscribed maculesMost commonly located over the

lumbosacral area and buttocksCommon in black infants and hispanic

infantsUsually fade by 7 years of age

Cutis MarmorataTransient, netlike mottlingCaused by variable vascular constriction

and dilationResponse to chilling, resolves with warmingBenign in neonates but if persists past 6

months, could be sign of congenital hypothyroidism

HemangiomasCongenital vascular malformationOccur in 10-40% of all newbornsPresents in first few months of lifeMarked vascular overgrowth resulting in

bright red discoloration and definite elevation

Rapid growth the first year50% involute by age, 90% by age 9

Salmon Patch (Stork bite)Vascular malformationSeen in 40% of infantsFades in first year of lifeUsually located nape of neck, forehead and

upper eyelids

Port wine stainPurplish-red color vascular malformation

present at birthLesions do not enlarge but remain flatWhen port wine stain involves ophthalmic

branch of the fifth cranial (trigeminal) nerve, it can be associated be a constellation termed Sturge-Weber syndrome.

Sturge-Weber syndrome involving seizures, mental retardation, hemiplegia and glaucoma

Herpes Simplex VirusUsually HSV 2 in infants