Search Results for: trichotillomania

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Tricho-, pilo-, folliculo- ?

…lasia. “Tricho-” is applied correctly in the name trichotillomania, in which hair shafts are twisted to and fro until they break, and it also is used properly in the term trichomalacia, in which hair shafts are frayed as a consequence of…

Histologic Diagnosis of Inflammatory Skin Diseases

Telogen effluvium

…ine and parietal region of African-American women especially. Trichotillomania is typified by hairs of different lengths, many of them stubble, as a consequence of breaking by twisting them back and forth; in females mostly. Alopecia areata presents…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Alopecia areata Trichotillomania 1. Sparse infiltrate sometimes of lymphocytes around venules of the superficial and deep plexuses 1. Practically no infiltrate of inflammatory cells 2. In early lesions, infiltrate of lymphocytes in the vicinity imm…

Differential Diagnosis in Dermatopathology

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Alopecia areata Trichotillomania

Differential Diagnosis in Dermatopathology

Discussions

…nflammatory alopecias, such as “trichomalacia” of trichotillomania and thickened bundles of collagen in thickened fibrous tracks of traction alopecia. Despite the findings histopathologic in common, common baldness usually can be differen…

Differential Diagnosis in Dermatopathology

Common baldness vs. Telogen effluvium

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

Images

Trichotillomania (developed fully) Traction Alopecia (end stage)…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Trichotillomania (developed fully) Traction Alopecia (end stage) 1. Number of follicles normal 1. Number of follicles seems to be decreased 2. More than half of the follicles in a section of tissue usually are in catagen 2. Far fewer than half of t…