PMC6385514_01
Patch of woolly hair over the vertex
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F1
On examination, there was solitary cicrcumscribed patch of size 5 cm x 6 cm over vertex [Figure 1].
Linear epidermal nevus over chin
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F2
Linear epidermal nevus was present over the chin extending to the neck there [Figure 2] was no evidence of palmoplantar keratoderma and precocious puberty.
Light microscopy showing twisting and breakage of hair
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F3
Light microscopy of hair revealed irregularities of the cuticle and twisting of hair [Figure 3].
Trichoscopy showing irregularity of hair shaft
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F4
Dermoscopy revealed snake crawl appearance and knotting of hair [Figure 4].