Differential Diagnosis in Dermatopathology

Discussions

…es acuta and pityriasis lichenoides chronica are not different diseases, but different names for changes morphologic of the same disease. Pityriasis lichenoides acuta and pityriasis lichenoides chronica have many findings histopathologic in common: m…

Differential Diagnosis in Dermatopathology

Nevus verrucosus vs. Acanthosis nigricans

A condition of persons of any age, but particularly children with a genetic proclivity for allergic rhinitis and conjunctivitis, and allergic asthma. Intense pruritus induces patients to rub the skin intensely and to scratch furiously, the resultant…

Differential Diagnosis in Dermatopathology

Discussions

Pruritic urticarial papules and plaques of pregnancy (PUPPP) and a superficial response to an assault by an arthropod are inflammatory diseases that share many features clinical and findings histopathologic. When viewed through a conventional micros…

Differential Diagnosis in Dermatopathology

Discussions

Features clinical common to amputation neuroma secondary to rudimentary supernumerary digit and acquired digital fibrokeratoma are location, shape, and consistency. Both conditions occur on or near fingers and both are firm, keratotic, polypoid proj…

Dermatology Practical & Conceptual

Widespread pruritic papules on the trunk and extremities

The patient A 42-year-old Caucasian man presented with a 15-year history of a widespread, persistent, pruritic eruption over his trunk and extremities. He was not on medication and had no relevant family history. On physical examination, multiple di…

Histologic Diagnosis of Inflammatory Skin Diseases

Parasitic infestations

…zil. Int J Dermatol 2004 Jul;43(7):511-15. Kaposi M. Parasitic diseases of the skin, dermatoses parasitaire. In: Hebra F, Kaposi M. On Diseases of the Skin Including the Exanthemata. London: New Sydenham Society, 1880: 5. Magana M, Messina M, Bustama…

Histologic Diagnosis of Inflammatory Skin Diseases

Acquired epidermolysis bullosa

…idermolysis bullosa acquisita. In: Jordon RE. Atlas of Bullous Disease. New York: Churchill Livingstone, 2000;125–38. Wise F, Lautman MF. Epidermolysis bullosa beginning in adult life. The acquired form of the disease, with report of a case and revie…

Histologic Diagnosis of Inflammatory Skin Diseases

Lupus erythematosus

…tumidus. Because the precise nosologic status of Degos’ disease and pernio still is in debate, those two conditions are being treated separately at the very end of this subchapter. Correlation clinicopathologic A “butterfly blush,”…