No abstract available.
Iron* ; Skin Pigmentation*

Molecular identification of human externally visible characteristic （EVC）, which is also called forensic DNA phenotyping （FDP）, can serve as a "molecular witness" when the routine investigations can not determine the identity of a criminal and the DNA database find no match after comparison. FDP could assist in investigation of cases by inferring the externally visible phenotypic characteristics from DNA obtained from the biological materials left at crime scenes, or unknown corpses. In the last few years, studies on the selection of EVC related molecular markers have been reported frequently and some of the EVCs could already be inferred with a certain accuracy, such as hair color and iris color. Further fundamental research on molecular genetics of human external phenotypic characteristics, as well as the continuous innovation on molecular biological technology would promote the rapid development of DNA molecular identification of human phenotypic characteristics.
DNA/genetics* ; Databases, Nucleic Acid ; Eye Color/genetics* ; Forensic Anthropology/trends* ; Forensic Genetics/trends* ; Hair Color/genetics* ; Humans ; Phenotype ; Physical Appearance, Body/genetics* ; Skin Pigmentation/genetics*

No abstract available.
Pigmentation*

No abstract available.
Pigmentation*

No abstract available.
Cataract* ; Chlorpromazine* ; Skin Pigmentation* ; Skin*

BACKGROUND: Skin types vary, making it difficult to identify them at a glance. To effectively understand skin type, analysis based on a questionnaire could be helpful. OBJECTIVE: The purpose of this study was to identify the accuracy and effectiveness of the Baumann skin type questionnaire (BSTQ) compared with an interview with a dermatologic specialist. In addition, we aimed to identify differences in skin type proportions according to age and develop a modified BSTQ. METHODS: Subjects included 202 women (19~64 years of age) who visited the dermatologic clinic of our hospital. They completed both the BSTQ and an interview with a dermatologic specialist. A modified BSTQ was developed by removing similar and racial questions and adjusting grading scores. RESULTS: The agreement between skin type proportions analyzed by the BSTQ and an interview was not reasonable (κ=0.428, 95% confidence interval [CI]: 0.363~0.493). There was a correlation between the proportion of dryness and age (R2=0.029, p<0.05). However, other skin type proportions (sensitivity, pigmentation, and wrinkles) were not significantly correlated with age. The modified BSTQ showed substantial agreement with the BSTQ in skin type proportions (κ=0.691, 95% CI: 0.641~0.740). CONCLUSION: We identified the skin types of Korean women of various ages using the BSTQ and an interview. Furthermore, the modified BSTQ might be helpful for accurately recognizing skin types.
Female ; Humans ; Pigmentation ; Skin* ; Specialization

Eccrine poromas mainly involve the non-hairy surfaces of the skin, however, have also been found on hair bearing areas. Pigmentation in the tumor cells is rare but has been mentioned in a few papers. The following case documents an example of a pigmented eccrine poroma which occurred in an unusual location; the posterior scalp.
Hair ; Pigmentation ; Poroma* ; Scalp* ; Skin

Variation in human skin and hair color is the most notable aspect of human variability and several studies in evolution, genetics and developmental biology contributed to explain the mechanisms underlying human skin pigmentation, which is responsible for differences in skin color across the world's populations. Despite skin pigmentation is primarily related to melanocytes functionality, the surrounding keratinocytes and extracellular matrix proteins and fibroblasts in the underlying dermal compartment actively contribute to cutaneous homeostasis. Many autocrine/paracrine secreted factors and cell adhesion mechanisms involving both epidermal and dermal constituents determine constitutive skin pigmentation and, whenever deregulated, the occurrence of pigmentary disorders. In particular, an increased expression of such mediators and their specific receptors frequently lead to hyperpigmentary conditions, such as in melasma and in solar lentigo, whereas a defect in their expression/release is related to hypopigmented disorders, as seen in vitiligo. All these interactions underline the relevant role of pigmentation on human evolution and biology.
Biology ; Cell Adhesion ; Developmental Biology ; Extracellular Matrix Proteins ; Fibroblasts ; Genetics ; Hair Color ; Homeostasis ; Humans ; Intercellular Signaling Peptides and Proteins ; Keratinocytes ; Lentigo ; Melanocytes ; Melanosis ; Pigmentation ; Skin Pigmentation* ; Skin* ; Vitiligo

Almost always patients with multiple neurofibromatosis show cafe-au-lait macules on their skin. At times the skin macules are seen even before the appearance of the neurofibromata in childhood. The author experienced one case of neurofibromatosis in a 12-year-old boy who has no cafe-au-lait macules. Besides the clinical peculiarity of having no skin pigmentation, the histopathology of the case showed well-formed double-palisading structure, which is not common among the micro-scopical findings of neurofibromata.
Child ; Humans ; Male ; Neurofibromatoses* ; Skin ; Skin Pigmentation

Prurigo pigmentosa(PP) is a rare dermatosis with an unknown cause characterized by intensely pruritic papules that resolve with reticulate pigmentation. It is a disease entitity commonly reported in Japan but seemingly rare in other parts of the world. We report 5 cases that clinically and histopathologically fulfilled the characterisitics of PP and were treated with dapsone resulting in significant clinical improvement.
Dapsone ; Japan ; Pigmentation ; Prurigo* ; Skin Diseases