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Normal Dermatologic Findings
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Erythema Toxicum Neonatorum
Benign, self-limiting, asymptomatic disorder of unknown etiology Occurs in up to 50% of infants Presents at hours of life Smear of pustule reveals eosinophils
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Pustular melanosis Self-limiting dermatosis of unknown etiology
Usually presents at birth Disappears in hours leaving pigmented macules with a collarette of scale Hyperpigmentation fades in 3 weeks to 3 months
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Mongolian Spot Flat, slate-gray to bluish-black poorly circumscribed macules Most commonly located over the lumbosacral area and buttocks Common in black infants and hispanic infants Usually fade by 7 years of age
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Cutis Marmorata Transient, netlike mottling
Caused by variable vascular constriction and dilation Response to chilling, resolves with warming Benign in neonates but if persists past 6 months, could be sign of congenital hypothyroidism
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Hemangiomas Congenital vascular malformation
Occur in 10-40% of all newborns Presents in first few months of life Marked vascular overgrowth resulting in bright red discoloration and definite elevation Rapid growth the first year 50% involute by age, 90% by age 9
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Salmon Patch (Stork bite)
Vascular malformation Seen in 40% of infants Fades in first year of life Usually located nape of neck, forehead and upper eyelids
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Port wine stain Purplish-red color vascular malformation present at birth Lesions do not enlarge but remain flat When 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
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Herpes Simplex Virus Usually HSV 2 in infants
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