Nilton Di Chiacchio, MD, PhD: Head of the Dermatologic Clinic, Hospital do Servidor Público Municipal de São Paulo, São Paulo, Brazil Antonella Tosti, MD: Fredric Brandt Endowed Professor of Dermatology, Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA

• 1.Acute paronychia. 2.Bowen’s disease. 3.Brittle nails. 4.Chronic paronychia. 5.Eczema. 6.Erythronychia. 7.Glomus tumor. 8.Hematomas. 9.Herpes simplex. 10.Ingrowing nail. 11.Lichen planus. 12.Melanonychias. 13.Myxoid cysts. 14.Melanoma. 15.Onychomatricoma. 16.Onychomycosis. 17.Onychotillomania. 18.Onycolysis. 19.Psoriasis. 20.Retronychia. 21.Squamous cell carcinoma. 22.Subungual exostosis. 23.Trachyonychia. 24.Transverse overcurvature. 25.Warts. 26.Yellow nail syndrome. Appendixes A.Practical procedures. B.Preparing a biopsy specimen. Index.

Nilton Di Chiacchio, MD, PhD: Head of the Dermatologic Clinic, Hospital do Servidor Público Municipal de São Paulo, São Paulo, Brazil Antonella Tosti, MD: Fredric Brandt Endowed Professor of Dermatology, Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA

• 1.Acute paronychia. 2.Bowen’s disease. 3.Brittle nails. 4.Chronic paronychia. 5.Eczema. 6.Erythronychia. 7.Glomus tumor. 8.Hematomas. 9.Herpes simplex. 10.Ingrowing nail. 11.Lichen planus. 12.Melanonychias. 13.Myxoid cysts. 14.Melanoma. 15.Onychomatricoma. 16.Onychomycosis. 17.Onychotillomania. 18.Onycolysis. 19.Psoriasis. 20.Retronychia. 21.Squamous cell carcinoma. 22.Subungual exostosis. 23.Trachyonychia. 24.Transverse overcurvature. 25.Warts. 26.Yellow nail syndrome. Appendixes A.Practical procedures. B.Preparing a biopsy specimen. Index.

Nilton Di Chiacchio, MD, PhD: Head of the Dermatologic Clinic, Hospital do Servidor Público Municipal de São Paulo, São Paulo, Brazil Antonella Tosti, MD: Fredric Brandt Endowed Professor of Dermatology, Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA

• 1.Acute paronychia. 2.Bowen’s disease. 3.Brittle nails. 4.Chronic paronychia. 5.Eczema. 6.Erythronychia. 7.Glomus tumor. 8.Hematomas. 9.Herpes simplex. 10.Ingrowing nail. 11.Lichen planus. 12.Melanonychias. 13.Myxoid cysts. 14.Melanoma. 15.Onychomatricoma. 16.Onychomycosis. 17.Onychotillomania. 18.Onycolysis. 19.Psoriasis. 20.Retronychia. 21.Squamous cell carcinoma. 22.Subungual exostosis. 23.Trachyonychia. 24.Transverse overcurvature. 25.Warts. 26.Yellow nail syndrome. Appendixes A.Practical procedures. B.Preparing a biopsy specimen. Index.