1. Torres JE, Sanchez JL. Disseminated pyogenic granuloma developing after an exfoliative dermatitis. J Am Acad Dermatol 1995;32:280-2. 2. Taira JW, Hill TL, Everett MA. Lobular capillary hemangioma (pyogenic granuloma) with satellitosis. J Am Acad Dermatol 1992;27:297-300. 3. Shah M, Kingston TP, Cotterill JA. Eruptive pyogenic granulomas: A successfully treated patient and review of the liter...

Because of its vascular selectivity, the flashlamp-pumped pulsed dye laser (585 nm) is efficacious in the treatment of vascular lesions and is successfully used for the treatment of port-wine stains and haemangiomas in children. Based on the encouraging results with these cutaneous vascular disorders, the cutaneous lesions of patients with lupus erythematosus (LE) have now also been treated wit...

BACKGROUND A variety of lasers and light sources have been used for hair removal. A novel flashlamp-based device, with a mechanism of action mixing a combination of light and heat, has recently become available. OBJECTIVE To assess the efficacy, side effects and long-term results of this new light/heat-based system for photo-epilation. METHODS A total of 21 patients (six male, 15 female), s...

Background: Rosacea is a chronic inflammatory skin condition associated with four distinct subtypes: erythematotelangiectatic, papulopustular, phymatous, and ocular. Purpose: To review the different kinds of management for all subtypes. Methods: We divided rosacea management into three main categories: patient education, skin care, and pharmacological/procedural interventions. Results: Flushing...

Seawater has been irradiated using a train of 70 ns flashes from a 440 nm laser source. This wavelength is on resonance with the blue absorption peak of Chlorophyll pigment associated with the photosystem of in vitro phytoplankton. The resulting fluorescence at 685 nm is instantaneously recorded during each laser pulse using a streak camera. Delayed fluorescence is observed, yielding clues abou...

BACKGROUND Various lasers, particularly the flashlamp-pulsed dye laser, have been proven to be effective in the treatment of facial vascular lesions. Nevertheless, the post-treatment side effects, such as pronounced purpura and changes in pigmentation, have been a matter of concern to patients. OBJECTIVE To test the efficacy of an alternative treatment option that uses intense pulsed light to...

Cr-Tm-YAG, Cr-Tm-Ho-YAG, and Er-YAG lasers at 2.01 pm, 2.1 2pm, and 2.94 pm, resp., are compared regarding single-shot and high-repetition rate efficiency. The 2 pm lasers are intrinsically limited at higher operation temperatures, the Er-laser only shows thermal lensing. Th~n (3 mm) Tmand Ho-laser rods allow high repetition rates (30 Hz) and with increasing rod diameters pulse energies up to 1...

Peter Pitirimovich Sorokin, a renowned pioneer in laser science, passed away on September 24, 2015, from injuries suffered during a fall a month earlier. Peter, an IBM Fellow emeritus, devoted his career to understanding, creating, and using light. His 1966 discovery of laser action in organic dyes is extraordinarily significant. Dye lasers, with their continuous tunability over a broad spectra...

These experiments employ the photoisomerizable compound, 3,3'-bis-[alpha-(trimethylammonium)methyl]azobenzene (Bis-Q), to study the response to muscarinic agents in frog myocardium. In homogenates from the heart, trans-Bis-Q blocks the binding of [3H]-N-methylscopolamine to muscarinic receptors. In voltage-clamped atrial trabeculae, trans-Bis-Q blocks the agonist-induced potassium conductance. ...