Journal of the American Academy of Dermatology
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J. Am. Acad. Dermatol. · Mar 2000
Randomized Controlled Trial Multicenter Study Clinical TrialThe combination of 2% 4-hydroxyanisole (Mequinol) and 0.01% tretinoin is effective in improving the appearance of solar lentigines and related hyperpigmented lesions in two double-blind multicenter clinical studies.
Solar lentigines are a chronic condition of the aging population resulting from years of cumulative sun exposure. A topical treatment that is both safe and effective would be welcome and useful. Combinations of therapeutic agents are often used and allow synergy of mechanisms with tolerability. A tyrosinase inhibitor in use in Europe, 4-hydroxyanisole (Mequinol), and the retinoid tretinoin have been used singly as depigmenting agents. ⋯ For the treatment of solar lentigines and related hyperpigmented lesions, the topical combination product containing 2% 4HA/0.01% tretinoin solution is well tolerated and superior to either active component.
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J. Am. Acad. Dermatol. · Feb 2000
Unilesional cutaneous T-cell lymphoma: clinical features, therapy, and follow-up of 10 patients with a treatment-responsive mycosis fungoides variant.
Ten patients, mean age 61 years, who presented with unilesional cutaneous T-cell lymphoma (CTCL) were studied. Lesional structure and distribution were similar to disseminated CTCL. ⋯ The relatively benign behavior of unilesional CTCL may reflect the prognostic importance of minimal tumor burden. Locally ablative therapy in the management of localized CTCL appears effective.
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J. Am. Acad. Dermatol. · Jan 2000
Comparative StudyComparison of carbon dioxide laser, erbium:YAG laser, dermabrasion, and dermatome: a study of thermal damage, wound contraction, and wound healing in a live pig model: implications for skin resurfacing.
Advances in laser technology allow for precise tissue removal and minimal thermal damage. However, mechanisms for cosmetic improvement have not been determined. Investigators have suggested that ablation, collagen shrinkage, and new collagen deposition all contribute to the clinical outcome. ⋯ Our results show that CO(2) laser resurfacing produces short- and long-term wound contraction that is greater than that induced by purely ablative methods for the same total depth of injury. The erbium laser produced wound contraction profiles similar to those produced by mechanical wounding. The data suggest that initial collagen contraction and thermal damage modulate wound healing.
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J. Am. Acad. Dermatol. · Dec 1999
Randomized Controlled Trial Multicenter Study Clinical Trial Controlled Clinical TrialA double-blind, placebo-controlled study of topical tetracaine in the treatment of herpes labialis.
Before the September 1996 approval of 1% penciclovir cream for the treatment of herpes labialis, no other prescription topical therapy was approved for the treatment of this recurrent viral disease affecting approximately 20% of the adult population of the United States. Local anesthetics, such as tetracaine, have been used in over-the-counter topical products, but are only labeled for the relief of pain and itching associated with cold sores and fever blisters. ⋯ Our findings indicate that a 1.8% topical tetracaine cream, when applied frequently, significantly reduces the healing time of recurrent herpes labialis lesions. Additionally, it is perceived by the study subjects to reduce itching of the lesions and to have a beneficial overall effect.
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J. Am. Acad. Dermatol. · Dec 1999
Incidence of preputial lichen sclerosus in adults: histologic study of circumcision specimens.
Narrowing of the prepuce in men is poorly documented, and the causes are often unknown, except in the case of clinical infections or skin diseases such as lichen sclerosus (LS). ⋯ Phimosis in young adults is usually not associated with LS (only 14%). In contrast, most older patients had secondary phimosis caused by progressive LS (40%) or subacute nonspecific inflammatory changes (40%). Although all cases of phimosis in men should be treated by complete circumcision to prevent penile cancer, paraphimosis associated with preputial dyspareunia, with the exception of cases associated with LS, can be treated by corrective surgery.