LWNHLinear and Whorled Nevoid Hypermelanosis
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Our patient, along with LWNH, presented with delayed milestones.
LWNH has also been described under different names as zosteriform hyperpigmentation, zosteriform lentiginous nevus and 'zebra like pigmentation' (5) referring to its streaky distribution along lines of Blaschko resembling stripes on a zebra.
Nearly all cases have occurred sporadically, however apparent genetic transmission has been described in two families (5,11) .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.Cosmetic camouflage does offer some promise.