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Menkes Kinky Hair Disease: Differential Diagnoses & Workup
Updated: Dec 3, 2007
- Overview
- Differential Diagnoses & Workup
- Treatment & Medication
- Follow-up
Differential Diagnoses
Other Problems to Be Considered
Child abuse (based on skeletal radiographic findings)
Argininosuccinic aciduria
Björnstad syndrome
Crandall syndrome
Salti-Salem syndrome
Tay syndrome
Conradi-Hünermann chondrodysplasia punctata
Bazex syndrome
Citrullinemia
Hypohidrotic ectodermal dysplasia
Ankyloblepharon-ectodermal defects - Cleft lip and/or palate
Salamon syndrome
Arthrogryposis and ectodermal dysplasia
Ectodermal dysplasia with syndactyly
Tricho-odontonychial dysplasia with pili torti
Pili torti and enamel hypoplasia
Workup
Laboratory Studies
- The serum copper level is low.
- The serum ceruloplasmin level is low.
- Copper accumulation may be observed in cultured cells (useful mainly for prenatal diagnosis).
- Copper levels in the intestines, kidney, and skin fibroblasts are within the reference range or high.
- Copper levels in the liver, brain, and endothelial cells are low.
- Urine homovanillic/vanillylmandelic acid ratio of greater than 4 is strongly suggestive of Menkes disease and can be used as a screening method, especially in early infancy. Impaired activity of dopamine beta-hydroxylase, a copper-dependent enzyme, leads to increased homovanillic acid levels.8
Imaging Studies
- Radiography of the long bones and skull may be performed.
- Angiography or magnetic resonance angiography may be performed.
- Findings include metaphyseal widening of the femur and ribs, tibial and femoral spurs, and wormian bones of the skull.
Histologic Findings
Light microscopy shows hairs with pili torti that twist along the longitudinal axis. The twisting of the hair fiber creates the illusion of wide and narrow areas along the hair shaft similar to the nodes of monilethrix. Trichorrhexis nodosa also is commonly seen.
Electron microscopy of the skin shows that the diameter of dermal collagen fibrils is decreased and that sparse, amorphous elastin fibers are present.
More on Menkes Kinky Hair Disease |
| Overview: Menkes Kinky Hair Disease |
Differential Diagnoses & Workup: Menkes Kinky Hair Disease |
| Treatment & Medication: Menkes Kinky Hair Disease |
| Follow-up: Menkes Kinky Hair Disease |
| References |
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References
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Further Reading
Keywords
steely hair syndrome, trichopoliodystrophy, copper metabolism, copper deficiency, pili torti, hair-shaft abnormality
Differential Diagnoses & Workup: Menkes Kinky Hair Disease