Increased pigmentation of skin after sun exposure is a normal response to solar radiation. Like sunburn, suntan can also be produced by natural solar radiation and by artificial, narrow-spectrum ultraviolet B and ultraviolet A sources. The tanning response is a sign of ultraviolet damage. The western search for the suntan has led to an increased incidence of photoaging and skin cancer of light-skinned individuals. Photoaging is characterized by wrinkling, coarseness, dryness, mottled pigmentation, loss of elasticity, easy bruising, telangiectasias, and benign, premalignant and malignant growths on sun-exposed areas. Photoagings is a slow process, taking decades to become clinically apparent and even longer for all the manifestations to occur. Development of photoagings is determined both by genetic skin type and by the total lifetime radiation dose. Photoaging is more apparent in light-skinned Caucasians than in dark-skinned people. Although it is not possible to state what proportion is due to chronologic aging and what is due to photoaging, it has been estimated that photodamage may account for greater than 90 percent of the age- associated cosmetic problems of the skin. The proliferation of natural tanning and tanning salons should be discouraged by physicians. There is no safe tan.
Aging ; Elasticity ; Incidence ; Pigmentation ; Skin ; Skin Neoplasms ; Solar System ; Sunburn ; Suntan* ; Tanning ; Telangiectasis ; Triacetoneamine-N-Oxyl

No abstract available.
Iron* ; Skin Pigmentation*

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

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

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

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

Pigmented Bowen's disease (PBD) is a rare variant of Bowen's disease(BD). Most of the reported cases showed pigmented patches or thin plaques. Thus its clinical manifestations may simulated other various pigmented skin lesions. We experienced 2 cases of PBD in patients with multiple BD developed after taking Korean proprietary pills (KPP, "Hwan-Yak"), which were suspected to contain certain amount of arsenics. Both patients also showed arsenical keratosis on their palms and soles. The darker pigmentation of the PBL led us to differentiated them from melanoma.
Bowen's Disease* ; Humans ; Keratosis ; Melanoma ; Pigmentation ; Skin

Intense pulsed light (IPL) Quantum SR(TM) systems are high-intensity light sources, which emit polychromatic light. Unlike laser systems, these flashlamps work with noncoherent light in a broad wavelength spectrum of 560-1200 nm. IPL Quantum SR(TM) has been effective for the treatment of photoaging skin as a nonablative method. Three patients with photoaged skin were treated with fifth full-face treatments at 3-4 week intervals using IPL Quantum SR(TM). The cut-off filters of 560 nm and integrated contact cooling system were utilized for treatments. After the last treatments, the patients showed the overall improvement in clinical appearance, reduction in pigmentation and telangiectasia and fine wrinkle with smoothening of skin textures. Histological evaluations showed new collagen production after treatment. Full-face photorejuvenation using IPL Quantum SR(TM) can be an effective treatment modality for photoaged skin. We report herein IPL photorejuvenation is safe and effective in skin rejuvenation.
Collagen ; Humans ; Pigmentation ; Rejuvenation ; Skin ; Telangiectasis

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

17 patients with scar due to the burn (77%) and congenital pigment in the head and face, ages of 1-44 received plastic surgeries in the National Institute of Burn of which facial lesion and head skin lesion due to many different causes. The results have shown that frontal skin stretch bags were suitable for local lesions. The head skin stretch bags with hair were suitable for the lesions in the adjacent region.
Surgery, Plastic ; Skin Pigmentation ; surgery ; therapeutics