INTRODUCTION Vitiligo is a common, idiopathic, acquired, depigmenting disease characterized by loss of normal melanin pigments in the skin. It affects 1% to 2% of the general population without sex…

Dr. Sherry Hsiung is the Director of Mohs Micrographic and Dermatologic Surgery at the Skin Institute of New York. She attended the Massachusetts Institute of Technology for her undergraduate studies…

The future is bright for devices in dermatology. The advances made recently in the use of devices for diagnosis and treatment of serious disorders, such as melanoma and other forms…

Pseudoporphyria describes a photodistributed bullous disease that shares clinical and histologic features with porphyria cutanea tarda (PCT) yet has more benign cutaneous findings and normal urine porphyrin levels. The treatment…

INTRODUCTIONProcedural treatments for rhytides, photoaging, and acne scars have ranged from aggressive and highly effective to conservative with minimal efficacy. Traditional or standard ablative laser skin resurfacing (LSR) with carbon…

INTRODUCTIONSkin is more than 15% of body weight1 and is primarily composed of types I and III collagen. Type I collagen is 80% to 85% of the dermal collagen. Type…

INTRODUCTIONQuality-switching was first demonstrated in 1962 by R. W. Hellwarth.1,2 The quality factor, or Q, of a resonant laser cavity measures its internal energy loss. The higher the Q, the…

INTRODUCTIONAge-dependent modification is at the forefront of dermatological research and cosmetic science.1,2 Besides topical active ingredients and minimally invasive treatments, eg, botulinum toxin or hyaluronic acid, laser devices have expanded…

INTRODUCTIONA distinct trend in aesthetic medicine is the patient's demand for efficient, noninvasive treatments with no downtime. Ongoing with this, these so-called lunchtime procedures are expected to be as safe…

INTRODUCTIONAblative skin resurfacing (ASR) provides significant improvement in reversing signs of cutaneous photoaged skin1-6 but is limited by adverse postoperative sequelae such as extended recovery times, risk of infection, scarring,…

INTRODUCTION Melasma is a complex multifactorial disorder whose pathogenesis is not well understood. In addition to increased superficial and/or deep pigmentation, increased vascularity is often present. Vascular endothelial growth factor…

INTRODUCTIONSebaceous hyperplasia is a common benign proliferation of sebaceous glands. Lesions are characterized by multiple lobules emptying into a large central duct. They normally present as round, yellow, umbilicated papules.1…