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Punctate porokeratosis is a skin condition associated with either classic porokeratosis or linear porokeratosis types of porokeratosis, and is characterized by multiple, minute, and discrete punctate, hyperkeratotic, seed-like skin lesions surrounded by a thin, raised margin on the palms and soles. [1]: 535 [2]: 1668
Lesions emerge as well-demarcated psoriasiform or hyperkeratotic patches and plaques, with a central clearing and an elevated border. [3] Pagetoid reticulosis is a very slow progressive variant of mycosis fungoides and is usually localized unlike the latter.
Erysipelas (/ ˌ ɛ r ə ˈ s ɪ p ə l ə s /) is a relatively common bacterial infection of the superficial layer of the skin (upper dermis), extending to the superficial lymphatic vessels within the skin, characterized by a raised, well-defined, tender, bright red rash, typically on the face or legs, but which can occur anywhere on the skin.
Tuberculoid leprosy is a form of leprosy characterized by solitary skin lesions that are asymmetrically distributed with few lesions and well demarcated edges. There is also early and marked nerve damage. It tends to heal spontaneously.
Deep lesions: Sharply demarcated perivascular mononuclear cell infiltrate in middle to deep dermis [18] Not otherwise specified [notes 2] A lesion with superficial lymphocytic infiltrate without additional histopathologic characteristics can be due to for example drug reactions and insect bites. [2] [notes 2]
Sweet syndrome (SS), or acute febrile neutrophilic dermatosis, [1] [2] is a skin disease characterized by the sudden onset of fever, an elevated white blood cell count, and tender, red, well-demarcated papules and plaques that show dense infiltrates by neutrophil granulocytes on histologic examination.
Early infection is characterized by a well demarcated, usually pale, skin lesion which has lost its hair, and there may be many of these lesions if the infection is more severe (most commonly found on the cooler parts of the body such as the elbows, knees, fingers, or scrotum, as the bacteria thrive in cooler environments).
Fissure is a lesion in the skin that is usually narrow but deep. [29] [33] Induration is dermal thickening causing the cutaneous surface to feel thicker and firmer. [29] Atrophy refers to a loss of skin, and can be epidermal, dermal, or subcutaneous. [30] With epidermal atrophy, the skin appears thin, translucent, and wrinkled. [29]