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These lesions, called plaques, may be irregularly round-shaped to oval and are 10 cm (4 in) or larger in diameter. [2] They can be very thin plaques that are asymptomatic or mildly pruritic . [ 2 ] [ 3 ] Large-plaque parapsoriasis is a common associate of retiform parapsoriasis , can be accompanied by poikiloderma vasculare atrophicans , and ...
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.
[10] The five main types of psoriasis are plaque, guttate, inverse, pustular, and erythrodermic. [5] Plaque psoriasis, also known as psoriasis vulgaris, makes up about 90% of cases. [4] It typically presents as red patches with white scales on top. [4] Areas of the body most commonly affected are the back of the forearms, shins, navel area, and ...
Pain, swelling, or stiffness in one or more joints is commonly present in psoriatic arthritis. [5] Psoriatic arthritis is inflammatory, and affected joints are generally red or warm to the touch. [5] Asymmetrical oligoarthritis, defined as inflammation affecting two to four joints during the first six months of disease, is present in 70% of ...
There are some authors who prefer to limit the term "parapsoriasis" to large- and small-plaque variants only. [2] However, the following classification scheme is now generally accepted: [3]: 450 Large-plaque parapsoriasis; Small-plaque parapsoriasis; Pityriasis lichenoides. Pityriasis lichenoides chronica; Pityriasis lichenoides et ...
Symptoms commonly include prolonged, inflammatory pain in the lower back region, hips or buttocks. [1] [4] However, in more severe cases, pain can become more radicular and manifest itself in seemingly unrelated areas of the body including the legs, groin and feet. [citation needed] Symptoms are typically aggravated by: [citation needed]
Microscopic appearance is non-diagnostic and represented by chronic nonspecific dermatosis associated with psoriasiform changes in epidermis. [medical citation needed] In the mycotic stage, infiltrative plaques appear and biopsy shows a polymorphous inflammatory infiltrate in the dermis that contains small numbers of frankly atypical lymphoid ...
The dermis is the layer of skin between the epidermis and subcutaneous tissue, and comprises two sections, the papillary dermis and the reticular dermis. [10] The superficial papillary dermis interdigitates with the overlying rete ridges of the epidermis, between which the two layers interact through the basement membrane zone. [ 10 ]