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Pilomatrix carcinoma is a rare malignancy stemming from aberrant proliferation of matrical cells found in developing hair. This neoplasm demonstrates a bimodal age distribution and a proclivity for developing on the head or neck. Clinically, a firm, painless, violaceous nodule with overlying ulceration is commonly described. Pilomatrix carcinoma is considered a variable-grade malignancy that tends to be locally aggressive, though metastatic disease occurs in 10 to 16 percent of cases. Mortality rates range from 7 to 9 percent. Although there is no definitive treatment protocol, surgical intervention in the form of local excision or via Mohs micrographic surgery can be considered, with radiotherapy adopted as an effective alternative for nonsurgical, recurrent, or metastatic disease. Here, we describe the case of a 62-year-old man who presented for evaluation of a red, enlarging lesion on his forehead which became tender and started to bleed shortly before the patient presented to our clinic. The patient was ultimately referred to a tertiary care center for surgical excision and, at the time of this pubilcation, has been tumor-free for more than one year. This case of a rare and often unconsidered neoplasm underscores the importance of clinical suspicion and close patient follow up to prevent local recurrence, metastasis, and death.Nevus comedonicus and hidradenitis suppurativa (HS) are disorders of the pilosebaceous unit sharing a similar pathogenesis of follicular occlusion. To our knowledge, less than 10 cases of HS-like lesions complicating nevus comedonicus have been reported. We describe a six-year-old female child with congenital linear nevus comedonicus in the left axilla and groin, complicated by recurrent HS-like lesions in the two years prior to presenting to our clinic. After a meticulous review of the literature, we propose a novel term, nevus comedonicus suppurativa, for this clinical entity.BACKGROUND Due to both intrinsic and extrinsic damage, the skin is where easily noticable signs of aging manifest. OBJECTIVE We sought to assess the effects of two complex novel topical formulations, L'Unique Miracular Facial Serum (LMFS) and L'Unique Skin Essence (LSE) (Nourishing Biologicals LLC, St. Augustine, Florida) on hydration, firmness, elasticity, wrinkling, and pore size of facial skin after initial application and then after four, eight, and 12 weeks of use. METHODS An open-label study was conducted on subjects (N=32) between the ages of 45 and 65 years (mean 57 years). Subjects were treated with a twice-daily application of LMFS and LSE for a total of 12 weeks following a one-week washout period. The test products were gently applied in a circular motion to the face each morning and evening. Measurements of skin hydration, transepidermal water loss (TEWL), and skin elasticity and firmness and three-dimensional skin surface evaluations were performed at each visit. selleck chemical Skin lift and pore size assessments were also completed using clinical photography. Subjective outcomes were assessed by a posttreatment product efficiency survey at the end of each visit. RESULTS Objective instrumental measurements showed statistically significant improvements in skin hydration (20.19%), TEWL (25.96% at 15 minutes), firmness (24.77%), skin elasticity (11.40%), and skin lift (5.41%) with product use. Improvements in pore size and wrinkle depth were not statistically significant. CONCLUSION Use of the test products produced significant improvements in skin hydration, TEWL, firmness, and skin elasticity with associated improvements in facial skin appearance.Tattoo studios provide a unique venue for primary and secondary skin cancer prevention. Most tattoo artists promote sun protection for new tattoos in the form of aftercare instructions. Unfortunately, most tattoo artists are not well-informed on comprehensive sun safety recommendations, such as applying sunscreen prior to sun exposure with a sun protective factor (SPF) of 30 or higher, reapplying sunscreen when outdoors for more than two hours, using clothing that physically blocks ultraviolet rays, wearing wide-brimmed hats that shade the head, or seeking shade when available. However, recent evidence suggests that tattoo artists are open to learning about comprehensive sun safety recommendations and secondary skin cancer prevention methods. Tattoo studios also offer an opportunity to reach younger adults who may not be exposed to public health information or have access to health care. In addition to providing aftercare instructions to their clients, tattoo artists can disseminate sun safety information through social media and tattoo studio websites. Tattoo studios might serve as a an effective intervention environment to provide comprehensive full-body skin cancer prevention recommendations. Current recommendations to protect new tattoos from the sun should be compatible with the current sun safety guidelines from the American Academy of Dermatology.BACKGROUND Changes in skin pigmentation patterns related to the fluctuation of estrogen receptors and progesterone receptors during menstruation, also known as catamenial hyperpigmentation, have been reported in several studies. OBJECTIVE We sought to summarize the literature on catamenial skin hyperpigmentation and menses-induced exacerbations of skin pigmentation disorders. METHODS We searched PubMed/MEDLINE and the Cochrane Skin database with the search terms menses and pigment, estrogen and pigment, progesterone and pigment, and hyperpigmentation and menses, then assessed the relevant literature on skin diseases related to nonpathological menstruation. RESULTS The most commonly reported primary catamenial hyperpigmentation disorders are postinflammatory hyperpigmentation (PIH) after laser therapy and ultraviolet sensitivity (UV). The most reported chronic skin pigmentation exacerbated by menses is melasma. The literature detailing catamenial hyperpigmentation is limited to cross-sectional studies, experimental studies, surveys, review articles, case reports, and small trials, leading to a lower level of evidence. CONCLUSION Our review of the literature revealed that the most common catamenial hyperpigmentation is melasma. We also found a reported higher risk of PIH after laser therapies and UV sensitivity. Estrogen and progesterone are two of the major factors responsible for catamenial hyperpigmentation of the skin. Generally, the changes happen in the luteal phase of the menstrual cycle when the serum levels of sex hormones are at their peak. Although the exact balance of influence is controversial, most recent studies indicate that estrogen has a more prominent role than progesterone in inducing hyperpigmentation.

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