Histologic Diagnosis of Inflammatory Skin Diseases

Drug eruptions

Drug eruptions Synonyms Dermatitis medicamentosa Presentation stereotypical Age and sex Any age or either sex, but most common in older persons who take many medications. Immunosuppressed patients, among them those infected with the human immunodefi…

Histologic Diagnosis of Inflammatory Skin Diseases

Lichen sclerosus et atrophicus

Lichen sclerosus et atrophicus Synonyms Lichen sclerosis Lichen alba White spot disease Presentation stereotypical Age and sex Any age, but most common in middle-aged women Distribution of lesions Genitalia particularly, but also other sites such as…

Histologic Diagnosis of Inflammatory Skin Diseases

Traction alopecia

Traction alopecia Synonyms Hot comb alopecia Follicular degeneration syndrome Presentation stereotypical Age and sex Young women, especially African-Americans Distribution of lesions Scalp, in symmetrical fashion, particularly along the frontal ha…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…ibroplasia in the upper part of the dermis, slight acanthosis, hypergranulosis, and compact orthokeratosis = Allergic contact dermatitis, late ┬áThe compact orthokeratosis and hypergranulosis are signs of rubbing forcefully and persistently; the fibro…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

Images 10.5.1A: Perivascular and interstitial dermatitis + 10.5.1B: Lymphocytes and eosinophils around venules, and neutrophils in the interstitium in conjunction with degeneration of bundles of collagen focally = Response to an arthropod…

Differential Diagnosis in Dermatopathology

Alopecia of discoid lupus erythematosus vs. Alopecia of lichen planus

Papules on skin and mucous membranes that result from infection of keratinocytes by different types of papillomavirus and classified according to their silhouettes, to wit, papillated (verrucae vulgares on different sites such as volar skin, i.e., v…

Differential Diagnosis in Dermatopathology

Lichen planus vs. Lichenoid discoid lupus erythematosus

Papules on skin and mucous membranes that result from infection of keratinocytes by different types of papillomavirus and classified according to their silhouettes, to wit, papillated (verrucae vulgares on different sites such as volar skin, i.e., v…