Current concepts of neurocutaneous disorders.

The neurocutaneous diseases are a loosely bound group of clinical entities that were initially considered to have dysplastic and/or neoplastic changes of the nervous system and skin, though other organ systems are frequently involved. During the last several decades a variety of additional diseases have been included in this disease category despite their not having any known cutaneous abnormality. The major neurocutaneous syndromes are considered in this review.