A Clinical Atlas of 101 Common Skin Diseases

Alopecias

Loss of hair attributable either to the effects of inflammatory cells on follicles or to physiological or mechanical factors in which inflammatory cells play no role. Although the scalp is the site most often affected, any region of the skin that be…

Therapeutic Strategies in Dermatology

Alopecia: Initial Evaluation

Initial Evaluation Differential diagnosis Alopecia areata Androgenetic alopecia Traction alopecia Trichotillomania Anagen effluvium…

Therapeutic Strategies in Dermatology

Alopecia: Key Points

Key Points Alopecia, or hair loss, has a broad spectrum of causes. In order to appropriately treat alopecia, the type of hair loss or pathophysiology must be clearly identified. The evaluation for hair loss requires a very thorough history and phys…

Therapeutic Strategies in Dermatology

Superficial Fungal Infections: Therapy: Tinea capitis

Therapy: Tinea capitis Tinea capitis is superficial fungal infection of the scalp and hair It is mainly caused by any pathogenic dermatophyte except E. floccosum and T. concentricum The most common cause worldwide is M. canis, whereas in the USA i…

Therapeutic Strategies in Dermatology

Alopecia: Clinical Cases

Clinical Cases Case 1 8-year-old healthy girl with a two-year history of hair loss Irregular, jagged and scattered patches of hair loss on the scalp; no eyelashes Parents note that hair loss started when the family moved to a new state and descr…

Histologic Diagnosis of Inflammatory Skin Diseases

Trichotillomania

Trichotillomania Presentation stereotypical Age and sex Young girls usually Distribution of lesions Scalp in patchy asymmetrical fashion Individual lesions Patchy hair loss with shafts of different lengths, many of them very short Course For as long…

Differential Diagnosis in Dermatopathology

Alopecia areata vs. Trichotillomania

Loss of hair attributable either to the effects of inflammatory cells on follicles or to physiological or mechanical factors in which inflammatory cells play no role. Although the scalp is the site most often affected, any region of the skin that be…

Differential Diagnosis in Dermatopathology

Trichotillomania (developed fully) vs. Traction alopecia (end stage)

Loss of hair attributable either to the effects of inflammatory cells on follicles or to physiological or mechanical factors in which inflammatory cells play no role. Although the scalp is the site most often affected, any region of the skin that be…

Histologic Diagnosis of Inflammatory Skin Diseases

Trichotillomania

Loss of hair attributable either to the effects of inflammatory cells on follicles or to physiological or mechanical factors in which inflammatory cells play no role. Although the scalp is the site most often affected, any region of the skin that be…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…lumps of melanin in a pleated hair shaft) in an infundibulum = Trichotillomania ¬†Once trichomalacia has been spotted, it means that a particular hair has been twisted back and forth. It does not, in itself, signify trichotillomania; sometimes patient…