LWNHLinear and Whorled Nevoid Hypermelanosis
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Children with LWNH often have otherwise normal physical and neurologic development, however individual cases occurring along with chromosomal anomalies like mosaic trisomy of 7, 14, 18, 20 and X chromosomal mosaicism, congenital heart diseases (ventricular septal defect and tetralogy of Fallot) (12), CNS diseases (microcephaly, arhinencephaly and epilepsy) (13), psychomotor delay, deafness and brachydactyly have been mentioned in the literature.
No effective treatment is available for LWNH though chemical peels 3, depigmenting agents (16) and lasers have been tried without much success.
Department of Health and Human Services, records only 45 cases of LWNH to be reported till date (17).