Melasma indeterminate

Indeterminate melasma melasma in patients with skin type VI. 

Indeterminate - melasma in skin phototype V-VI By Wood s lamp (365 nm), enhancement of pigment is only seen in the epidermal type [68,98,126]. Thongh it may determine the depth of melanin in the skin, it is not useful for phototypes V-VI [50]. Sanchez et al. [127], in his study, classified melasma using Wood s lamp into Epidermal (70%) - enhancement or accentuation of color contrast between affected and normal skin (most common)... 

Dermal (10-15%) - no enhancement of color contrast Mixed (20%) - both enhancement and no color accentuation in different areas on the same patient Indeterminate - in very dark-skinned individuals, one cannot see the lesions under Wood s light Histopathologically and ultrastructurally, normal skin presents with melanin confined to the basal layer. Melasma lesions have more melanin in the whole epidermis, with increased number of melanocytes and widely dispersed melanosomes in the keratinocytes [19, 77, 126]. Dermal solar elastosis is likewise evident in lesional areas [19, 77]. 

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See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ ]

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