Psoriasis is a common and chronic skin disease of unknown cause. It can begin at any age but most commonly begins in young adults. The most common type of psoriasis consists of sharply demarcated red patches with adherent white scales. These occur most frequently on the scalp, elbows, knees, and lower back, but can occur anywhere on the skin. Plaque morphoea – a form of scleroderma (lesions usually multiple and asymmetrical with the trunk and hips the most commonly affected sites / firm, waxy, ivory white patches with a lilac-coloured edge). Sarcoid (uncommon / maculopapular type more common in black females with red-brown macules and papules, most frequently seen in periorbital areas and nasolabial folds). Pityriasis rubra pilaris (rash spreads from head to feet / sheets of erythema with an orange tinge, and interspersed sharply demarcated islands of unaffected skin / areas of rough, scaly papules).
Most common form of malignant skin cancer with high cure rate if removed early (usually slow growing). The rash is bilateral and symmetrical consisting of PATCHES and PLAQUES with indistinct margins, mild-moderate erythema, and yellowish, greasy SCALING with uncommon hair loss. DDx includes: Psoriasis (sharply demarcated, silvery scaling plaques, FHx), Atypical eczema (pruritus, indistinct borders and vesicles, juicy papules, or lichenification), Malignant tumors (cachexia, pruritus, night sweats, flushing, fatigue). Lesions favor sun-exposed areas appearing as disc-shaped, purplish-red plaques surmounted by a white adherent scale that also involves hair follicles. Plaque-type psoriasis, or psoriasis vulgaris, is the most common form, occurring in about 80 of all psoriasis patients. The serious immediate infusion reaction rate is 1, and about 1 of patients experience delayed hypersensitivity reactions consisting of myalgia, arthralgia, fever, or skin eruption. The rash consisted of chronic, recurrent, erythematous patches in the inframammary and inguinal folds (Figure 1). The patches were mildly macerated. Plaque psoriasis is the most common form of psoriasis. It is characterized by red, sharply demarcated papules or plaques with overlying, adherent, silvery-white scales that bleed when removed.
HLA types most frequently associated with psoriasis are HLA- B13, -B37, -B57, and, most importantly, HLA-Cw6, which is a candidate for functional involvement. Sharply marginated, dull-red plaques with loosely adherent, lamellar, silvery-white scales (Fig. The inflammatory plaque at the base is always sharply demarcated (Fig. Acute guttate psoriasis appears rapidly, a generalized rash. The most common type of hand eczema is irritant contact dermatitis (35; The skin peels from the fingertips distally, exposing a very dry, red, cracked, fissured, tender, or painful surface without skin lines. The most common variant is dry keratotic form of tinea characterized by adherent scales on an erythematous background. Psoriasis 9, 10, 12 (see Figure 19) is characterized by silvery-white scaly papules and plaques, sharply demarcated. Staphylococcus aureus is the most common cutaneous bacterial infection in persons with HIV disease. Ecthyma is an eroded or superficially ulcerated lesion with an adherent crust. Involvement of the liver and spleen with or without skin lesions is the most commonly diagnosed form of visceral disease. This condition presents as variably pruritic erythematous patches with a fine scale.
Derm Quiz 2 Flashcards
This lesion most commonly develops at a site of previous injury, and is best considered a variation of granulation tissue formation. The lesion somewhat resembles a volcano and consists of a round, firm, flesh colored, 1-cm nodule with sharply rising edges and a central crater. E. Psoriasis F. This lesion is characterized by light brown to black papules or plaques with an adherent waxy, greasy scale. She has a bright red, sharply demarcated, oozing and crusting rash involving one breast in the areola area. The skin is composed of 3 main layers: the epidermis, the dermis and the hypodermis. As an example, we see red papules in psoriasis and yellow papules in xanthomas. Non-bullous impetigo is more common in children ages 2-5 years. The disease occurs in the form of single or multiple, oval or circular round bald patches on the scalp, with fine grayish-white scales. The scales have a characteristic yellowish, non-adherent, greasy appearance.