UTTAR PRADESH JOURNAL OF ZOOLOGY

The organ forms an immune network. Through its pigments, it provides special defense against UV radiation. It is associated with the thermoregulation, retention and excretion of fluid. It has sensory functions and has an aesthetic role. Skin acts as a mirror of human being through which manifestations of systemic diseases can be envisioned. Melanin pigmentation occur in two ways as constitutive changes (genetically determined) and facultative changes (augmented by sun exposure). Ultraviolet (UV) irradiation regulates melanin production, as well as endocrine and autocrine factors. Ethnic differences in complexion are caused by the number, shape and distribution of melanosomes. As a result, the purpose of this prospective study was to determine the prevalence of non-neoplastic hyperpigmented skin lesions. Cysts and Group VI-tumors of the dermis and sub cutis belonged to this group.  A thorough clinical history and examination are required for skin disorders, just as they are for other organ systems. In these circumstances, the histological findings should be contrasted clinically, resulting in a reasonable diagnosis and treatment. The documentation of the breadth of skin lesions' dissemination has been critical to our understanding of etiopathogenesis.