The skin weighs an average of 4 kg (8.8 lb), covers an area of about 2 m (22 sq ft), and is made of three distinct layers: the epidermis, dermis, and subcutaneous tissue. … See more

In 1572, Geronimo Mercuriali of Forlì, Italy, completed De morbis cutaneis ('On the diseases of the skin'). It is considered the first scientific work dedicated to dermatology. See more

Primary lesions
• Macule: A macule is a change in surface color, without elevation or depression, so nonpalpable, well or ill-defined, variously sized, but generally … See more

• Wound, an injury which damages the epidermis. See more

Diseases of the skin include skin infections and skin neoplasms (including skin cancer). See more

The physical examination of the skin and its appendages, as well as the mucous membranes, forms the cornerstone of an accurate diagnosis … See more

• Hyperkeratosis
• Parakeratosis
• Hypergranulosis
• Acanthosis
• Papillomatosis See more