The often bizarre neurologic symptoms and signs occurring in conjunction with nevoid changes in the skin are perhaps more familiar to the neurologist than to the dermatologist. In most cases, however, the recognition of the nature of the cutaneous changes gives the key to the diagnosis. Since the skin and the nervous system have a common embryonic origin, namely, the ectoderm, aberrations in the genesis of this embryonal layer often result in congenital malformations affecting both structures selectively. To this varied group of neurologic signs and symptoms, following no true pattern and occurring in association with cutaneous nevi, the term neurocutaneous syndrome has been applied. The wide variety of neural and cutaneous pictures included in this syndrome is to be expected, inasmuch as the nature and degree of aberration from the normal will depend on the stage of embryologic development and differentiation reached by the embryonic ectodermal layer when the
KULCHAR GV, ANDERSON LE. THE NEUROCUTANEOUS SYNDROME: THE CONGENITAL ECTODERMOSES. Arch Derm Syphilol. 1934;30(2):211–217. doi:10.1001/archderm.1934.01460140037006
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