Vasomotor Instability Infant

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Infant Vasomotor

Figure 1.20. Cutis marmorata is a common finding in normal infants. This fine reticulated mottled appearance is due to vasomotor instability and thus is more commonly seen in premature infants, but should also alert one to the possibility of sepsis, hypothyroidism, and central nervous system pathology.

Figure 1.19. Mongolian spots in a black infant. The spots have no significance but are sometimes mistaken for bruises, causing a suspicion of child abuse. This should be kept in mind when intentional injury is questioned. They fade during childhood or appear to fade as the skin darkens. As mongolian spots are never elevated and are not palpable, they can be differentiated from a blue nevus which is raised and is located on the arms, legs, or face and persists throughout life.

Figure 1.20. Cutis marmorata is a common finding in normal infants. This fine reticulated mottled appearance is due to vasomotor instability and thus is more commonly seen in premature infants, but should also alert one to the possibility of sepsis, hypothyroidism, and central nervous system pathology.

Figure 1.21. In the harlequin sign (harlequin color change) there is a vivid line of demarcation which appears down the midline. The dependent side of the skin becomes flushed (erythematous) and the uppermost side becomes pale. If the infant is turned to the other side, the appearance of the skin reverses. It is proposed that this condition results from vasomotor instability.

Figure 1.22. The harlequin sign in another infant showing the frontal and posterior views. This condition occurs most commonly in premature infants, is rare in term infants, and is of no pathologic significance. It may recur repeatedly in the same infant but disappears within the first few months of life. Harlequin sign is not to be be confused with the harlequin fetus (ichthyosis congenita).

Figure 1.23. Erythema toxicum neonatorum (urticaria neonatorum) on the back of a term infant. This is the most common rash noted in the normal term infant. It is not seen in preterm and rarely seen in post-term infants. It usually appears on the 2nd or 3rd day of life (rarely in the first 24 hours) and is seldom seen after the age of 14 days. It affects about 40 to 50% of full term infants and the condition is self-limiting. Lesions may be minimal or extensive.

Figure 1.24. Another example of erythema toxicum neonatorum ("flea bite" dermatitis of the newborn). The lesions most frequently present are erythematous and mac-ulopapular, but macules or papules may predominate. The lesions come and go on various sites on the trunk and limbs before they disappear permanently. The rash may become confluent and intensified in areas subject to irritation.

Erythema Toxicum Vasomotor Instability Infant

Figure 1.23. Erythema toxicum neonatorum (urticaria neonatorum) on the back of a term infant. This is the most common rash noted in the normal term infant. It is not seen in preterm and rarely seen in post-term infants. It usually appears on the 2nd or 3rd day of life (rarely in the first 24 hours) and is seldom seen after the age of 14 days. It affects about 40 to 50% of full term infants and the condition is self-limiting. Lesions may be minimal or extensive.

Postterm Infants

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Responses

  • victor
    Is harlequin sign in a newborn normal significance?
    8 years ago
  • Protasio
    What is Vasomotor Instability?
    8 years ago
  • p k
    What causes vasomotor instability in infants?
    8 years ago
  • Mike Schulze
    What causes vasomotor in babies?
    7 years ago
  • wegahta
    What is the cause of vasomotor instability in septic infant?
    6 years ago
  • livia
    How late can infants have vasomotor instability?
    1 year ago

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