Topics include: all the various dermatitides, psychocutaneous disorders, psoriasis, all the dermatophytes (tinea), scabies, lice, seborrhea, onychomycosis, skin cancers, hyperhidrosis, pigmentary problems, UV-light problems, blistering disorders, alopecia....even has illustrations.
This text has all the latest and greatest medical management, drugs, dosages, and evidence based medical pearls with references. It has been edited by a board certified Dermatologist. 

This text is very extensive, it covers a vast amount of information, but is very easy to navigate.
Every section is in the same basic format:   epidemiology, pathophysiology, signs/symptoms, work-up, detailed treatments, extensive differential diagnosis, and even a few illustrations! At the end of each major section is a list of key references/resources as well.

The free DEMO contains the basic layout with live links to each chapter and sublinks to 1-2 topics per chapter.