Acquired dermal macular hyperpigmentation
Acquired dermal macular hyperpigmentation presents with blue, brown, slate grey or brownish-black macules, which can change in size and morphology over time. Lichen planus pigmentosus and idiopathic eruptive macular hyperpigmentation affect the face, neck, and proximal extremities.
Postinflammatory hyperpigmentation - DermNet
Postinflammatory hyperpigmentation is diagnosed by taking a careful history and examining the skin. Dermal melanosis gives a characteristic hue to the skin colour (grey-purple-brown). Sometimes the diagnosis is only made after skin biopsy. Histopathology reveals patchy epidermal melanosis and/or dermal melanosis.
Congenital Dermal Melanosis - Contemporary Pediatrics
2008年8月1日 · This fairly common phenomenon, also known as Mongolian spots, affects more than 90% of African Americans, 80% of Asians, 46% of Hispanics, and fewer than 10% of Caucasians.1 The bluish gray or slate-colored areas occur most frequently on the lower back and buttocks and less frequently on the posterior thighs, legs, back, and shoulders.
Pigmentation disorders - DermNet
Pigmentation disorders are often more troublesome in skin of colour. The melanocytes (pigment cells) are located at the base of the epidermis and produce the protein melanin. Melanin is carried by keratinocytes to the skin surface. The melanocytes of dark-skinned people produce more melanin than those of people with light skin.
Dermal Melanocytosis - StatPearls - NCBI Bookshelf
2023年7月31日 · This activity outlines the evaluation and management of congenital dermal melanocytosis (Mongolian spot). It explains the role of the interprofessional team in managing and considering the differential diagnoses in patients with this condition.
Dermal melanocytosis (previously known as Mongolian spot)
2019年3月13日 · Dermal melanocytosis occurs when melanocytes fail to complete their migration from the neural crest to the basal layer of the epidermis. The melanocytes end their migration in the middle to lower dermis, where based on the Tyndall effect, their brown pigment gives the skin’s surface a blue-grey color.
Oculodermal Melanocytosis (Nevus of Ota) - EyeWiki
Oculomucodermal melanocytosis (Nevus of Ota) is a benign dermal melanocytosis, that results in hyperpigmentation of the sclera and ipsilateral face. Presenting at birth or by adolescence, these lesions tend to remain unchanged throughout life but can darken overtime due to sun exposure.
Pathology Outlines - Dermal melanocytosis
2019年7月3日 · Also called oculodermal melanosis or nevus fuscoceruleus ophthalmomaxillaris Similar to nevus of Ito except for location (Ito in shoulder, side of neck and supraclavicular areas, within the distribution of the lateral supraclavicular nerve and lateral cutaneous brachial nerves)
Newborn Skin: Part II. Birthmarks | AAFP
2008年1月1日 · Dermal melanosis is another type of pigmented birthmark. Commonly known as “mongolian spots,” these flat bluish-gray or brown lesions arise when melanocytes are trapped deep in the skin ...
Facial Dermal Melanocytosis - Austin Publishing Group
2014年3月29日 · Dermal melanocytosis is usually localized, especially common among Asians, and mostly developmental or heritable in origin. Clinically, it shares bluish–grey coloration. When a sufficient number of melanin–containing cells are present in the dermis, various clinical forms are reported, depending on their onset and distribution.