A condition of persons of any age, but particularly children with a genetic proclivity for allergic rhinitis and conjunctivitis, and allergic asthma.
An inflammatory disease caused by the spirochete Borrelia burgdorferi that manifests itself in the skin as erythematous lesions with figurate shapes, e.g., (round, ellipsoid, and arcuate) (erythema chronicum migrans), pseudolymphomatous nodules (lymphadenosis benigna cutis), and acral patches and plaques that in time become atrophic (acrodermatitis chronica atrophicans).
A genetically determined disorder in which numerous closely set keratotic papules are present on the skin, especially the trunk, in nail units, and on mucous membranes, particularly the palate, but also rarely in other parts of the gastrointestinal tract.
An inflammatory process that develops secondary to trauma, usually in the form of a penetrating injury or rupture of a follicle, and that proceeds through stages of granulation tissue with numerous extravasated erythrocytes, granulomatous inflammation, and fibrosis.
A malignant nonepithelial neoplasm (a sarcoma) presumably of perineural fibrocytes that presents itself usually on the trunk, but sometimes elsewhere, such as the extremities, face, and scalp.
Extramammary Paget’s disease is an apocrine carcinoma that begins within the epidermis and presents itself clinically as a patch or a subtle plaque that extends centrifugally for many years before becoming a readily discernible thick plaque, a finding that signifies involvement by the carcinoma of the dermis, too.
A hamartoma of mostly follicular elements that presents itself clinically as a firm, skin-colored papule.