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 of older people; signs include widespread erythematous macules and patches, urticarial papules and plaques, and vesicles and bullae, the blisters often arising on urticarial plaques.
An inflammatory disease caused by the yeast Candida albicans and manifested clinically as erythematous papules and pustules that may become confluent to form plaques in the case of the former and erosions in the case of the latter.
Papules, nodules, and tumors that, on gross examination, are usually skin colored and, on histopathologic examination, consist of an epithelium-lined sac that contains fluid, cells, or both in the case of true cysts and of cysts that are associated with other epithelial elements of adnexa in the case of cystic hamartomas.
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.
Infundibulitis, usually a suppurative inflammatory process that involves infundibula, is either noninfectious, as in the case of pustules of acne vulgaris, or infectious, as in the case of pustules caused by Staphylococcus aureus.