Update on Nail Disorders

The document provides updates on various dermatological topics. Richard K. Scher, MD, emphasizes that not all nail abnormalities are due to fungal infections, highlighting the importance of differential diagnosis for nail disorders, which can include both benign and malignant tumors. Pat Engasser, MD, discusses the identification of new allergens in the 21st century, the use of the Contact Allergen Replacement Database (CARD), and the reduction of contact dermatitis through understanding and modifying allergen exposure. Anne Lucky, MD, reviews the metabolic syndrome, also known as polycystic ovary syndrome (PCOS), noting its clinical features, health consequences such as insulin resistance, and treatment options including oral contraceptives, antiandrogens, and insulin-sensitizing drugs. Jean Carruthers, MD, shares techniques in aesthetic procedures, including the use of botulinum toxin and fillers for facial rejuvenation. Each section concludes with "Nothing to disclose," indicating no conflicts of interest.