INTRODUCTIONOf all the procedures that the average dermatologist performs today, none is more common than the skin biopsy. Although the premise behind local anesthesia is to reduce the pain and…

INTRODUCTIONProton pump inhibitors (PPIs) are the most potent gastric acid–suppressing agents used for preventing nonsteroidal anti-inflammatory drug (NSAID)–induced ulceration and for treating peptic ulcers and other acid-related conditions.1,2 The first…

INTRODUCTION The study of percutaneous absorption (PA) of substances is relevant to the fields of dermatopharmacology (such as in the cases of drug delivery methods and chemical warfare) and occupational…

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…