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Arch Pediatr Adolesc Med. 1998;152(12):1240. doi:.
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DENOUEMENT AND DISCUSSION: ACRODERMATITIS ENTEROPATHICA–LIKE RASH IN A BREAST-FED, FULL-TERM INFANT WITH ZINC DEFICIENCY

Figure 1. Slightly scaly, thin, erythematous papules and plaques on the face, predominantly in a periorbital and perioral distribution.

Figure 2. Eroded, erythematous plaques of the genital and gluteal regions.

Acrodermatitis enteropathica (AE), a disorder in which gastrointestinal absorption of zinc is defective, is inherited in an autosomal recessive fashion. The name was coined by Danbolt and Closs1 in 1942 to describe the acrally predominant rash present in some patients with diarrhea. The association of AE with zinc deficiency was not discovered until 1974.2

Zinc deficiency associated with a similar rash may be the result of a dietary deficiency, malabsorption of zinc, or an abnormal loss of zinc.3 Zinc-deficient infants typically have diarrhea and are irritable, apathetic, and fail to thrive.

Premature infants seem to be at an increased risk for zinc deficiency and may exhibit a negative zinc balance until the third month of life, even under conditions of adequate zinc intake.4 Factors contributing to zinc deficiency in preterm infants include high zinc requirements and insufficient body stores, possibly related to high urinary excretion of zinc, losses from bony resorption, and immature absorption mechanisms.5

Breast-feeding typically protects against zinc deficiency. Breast-fed infants who develop AE frequently do not show symptoms until weaning. One speculation regarding the mechanism of this protective effect is the presence of a zinc-binding ligand, unique to human milk, that increases zinc bioavailability.5 Symptomatic zinc deficiency has been reported in several breast-fed infants, both premature57 and full term,3,810 suggesting that the protective effect of human milk, once assumed, requires redefinition. It has been suggested that low levels of zinc in the breast milk of mothers of affected infants, despite normal maternal serum zinc levels, are responsible for zinc deficiency in infants, a theory that has been demonstrated to be true in many cases.3,5,9 Theories regarding the cause of low levels of zinc in breast milk include defective mammary zinc secretion5 or abnormal zinc uptake from plasma by the mammary gland.11

CLINICAL MANIFESTATIONS

The clinical manifestations of zinc deficiency are similar regardless of the cause. Erythematous, scaly, thin papules and coalescing plaques are distributed predominantly in acral locations, on the face and extremities, and, most prominently, around the oral, orbital, genital, and anal orfices. The rash may also involve the trunk. The skin lesions are often erosive, especially in the periorifical locations. Occasionally, bullous or pustular lesions are present. Alopecia is a common feature. Diarrhea, paronychia, stomatitis, apathy, irritability, and failure to thrive occur with varying frequency.

ABNORMAL LABORATORY TEST RESULTS

Affected infants have low serum zinc levels. In breast-fed infants who do not have inherited AE, levels of zinc in maternal breast milk are low. Levels of serum alkaline phosphatase, a zinc-dependent enzyme, are usually decreased.

TREATMENT

Zinc sulfate, 5 to 10 mg/kg per day by mouth, rapidly reverses the cutaneous lesions. Improvement is noted within days and clearance occurs within 2 to 3 weeks. Stool patterns quickly return to normal after treatment. Parents report that their infants have higher energy levels and appetites shortly after therapy is started.

Zinc supplementation in infants who do not have inherited AE is usually unnecessary after weaning.

DIFFERENTIAL DIAGNOSIS

The cutaneous findings of zinc deficiency must be differentiated from other nutritional disorders such as essential fatty acid, carboxylase, and biotin deficiencies, isoleucine deficiency seen in some aminoacidurias under treatment, and the AE-like rash associated with cystic fibrosis. The rashes of psoriasis and severe seborrheic dermatitis may have some similar features.

Accepted for publication July 22, 1997.

Reprints: Anthony J. Mancini, MD, Division of Dermatology, 107, Children's Memorial Hospital, 2300 Children's Plaza, Chicago, IL 60614.

Danbolt  NCloss  K Acrodermatitis enteropathica. Acta Derm Venereol. 1942;23127- 169
Moynahan  EJ Acrodermatitis enteropathica: a lethal inherited human zinc-deficiency disorder. Lancet. 1974;2399- 400
Link to Article
Lee  MGHong  KTKim  JJ Transient symptomatic zinc deficiency in a full-term breast-fed infant. J Am Acad Dermatol. 1990;23375- 379
Link to Article
Dauncey  MJShaw  JCLUrman  J The absorption and retention of magnesium, zinc, and copper by low-birth-weight infants fed pasteurized human breast milk. Pediatr Res. 1977;111033- 1039
Link to Article
Zimmerman  AWHambidge  MLepow  MIGreenberg  RDStover  MLCasey  CE Acrodermatitis in breast-fed premature infants: evidence for a defect of mammary zinc secretion. Pediatrics. 1982;69176- 183
Connors  TJCzarnecki  DBHaskett  MI Acquired zinc deficiency in a breast-fed premature infant. Arch Dermatol. 1983;119319- 321
Link to Article
Aggett  PJAtherton  DJMore  JDavey  JDelves  HTHarries  JT Symptomatic zinc deficiency in a breast-fed, preterm infant. Arch Dis Child. 1980;55547- 550
Link to Article
Glover  MTAtherton  DJ Transient zinc deficiency in two full-term breast-fed siblings associated with low maternal breast milk zinc concentration. Pediatr Dermatol. 1988;510- 13
Link to Article
Bye  AMEGoodfellow  AAtherton  DJ Transient zinc deficiency in a full-term breast-fed infant of normal birth weight. Pediatr Dermatol. 1985;2308- 311
Link to Article
Roberts  LJHShadwick  CFBergstresser  PR Zinc deficiency in two full-term breast-fed infants. J Am Acad Dermatol. 1987;16301- 304
Link to Article
Atkinson  SAWhelan  DWhyte  RKLonnerdal  B Abnormal zinc content in human milk: risk for development of nutritional zinc deficiency in infants. AJDC. 1989;143608- 611

Tables

References

Danbolt  NCloss  K Acrodermatitis enteropathica. Acta Derm Venereol. 1942;23127- 169
Moynahan  EJ Acrodermatitis enteropathica: a lethal inherited human zinc-deficiency disorder. Lancet. 1974;2399- 400
Link to Article
Lee  MGHong  KTKim  JJ Transient symptomatic zinc deficiency in a full-term breast-fed infant. J Am Acad Dermatol. 1990;23375- 379
Link to Article
Dauncey  MJShaw  JCLUrman  J The absorption and retention of magnesium, zinc, and copper by low-birth-weight infants fed pasteurized human breast milk. Pediatr Res. 1977;111033- 1039
Link to Article
Zimmerman  AWHambidge  MLepow  MIGreenberg  RDStover  MLCasey  CE Acrodermatitis in breast-fed premature infants: evidence for a defect of mammary zinc secretion. Pediatrics. 1982;69176- 183
Connors  TJCzarnecki  DBHaskett  MI Acquired zinc deficiency in a breast-fed premature infant. Arch Dermatol. 1983;119319- 321
Link to Article
Aggett  PJAtherton  DJMore  JDavey  JDelves  HTHarries  JT Symptomatic zinc deficiency in a breast-fed, preterm infant. Arch Dis Child. 1980;55547- 550
Link to Article
Glover  MTAtherton  DJ Transient zinc deficiency in two full-term breast-fed siblings associated with low maternal breast milk zinc concentration. Pediatr Dermatol. 1988;510- 13
Link to Article
Bye  AMEGoodfellow  AAtherton  DJ Transient zinc deficiency in a full-term breast-fed infant of normal birth weight. Pediatr Dermatol. 1985;2308- 311
Link to Article
Roberts  LJHShadwick  CFBergstresser  PR Zinc deficiency in two full-term breast-fed infants. J Am Acad Dermatol. 1987;16301- 304
Link to Article
Atkinson  SAWhelan  DWhyte  RKLonnerdal  B Abnormal zinc content in human milk: risk for development of nutritional zinc deficiency in infants. AJDC. 1989;143608- 611

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