The pustules are not contagious but are the result of sudden and extreme autoimmune inflammation. The disease however can be confused with many other entities. The differential diagnoses of guttate psoriasis include tinea corporis, secondary syphilis, nummular eczema, and pityriasis rosea. Table 1. These variants to 6 can be differentiated from the common plaque type by morphology. 1 Below is a review and update on the assessment, diagnosis, and treatment of psoriasis. Differential diagnoses include atopic der- It affects the face more in children than it does adults and it often appears in the nappy and flexural region when they are still in infancy. Summary. Evaluation and differential diagnosis.Less common variants of psoriasis include inverse psoriasis, pustu-lar psoriasis, guttate psoriasis, erythrodermic psoriasis, and annular psoriasis (Figures 3). The PASI score is the ‘Psoriasis Area and Severity Index’, and is mainly used for evaluating the effect of interventions in clinical trials. The plaques aren’t as thick and the lesions are less scaly. - Guttate psoriasis 1 - Guttate psoriasis 2 - Pityriasis rosea dark skin - Pityriasis rosea trailing scale - Pityriasis rosea with herald patch - Tinea corporis - multiple lesions - Tinea corporis 3 - Papular secondary syphilis - Palmar rash secondary syphilis - Pityriasis lichenoides chronica - Nummular eczema legs - Nummular eczema legs 2 - Viral exanthem close view Guttate psoriasis is characterised by multiple small 'tear drop' lesions that tend to affect most of the body. Guttate psoriasis is a form of psoriasis that often appears in the wake of strep throat and other similar infections. Usually starts with a single plaque (‘herald patch’), with colour from salmon to erythematous, followed by a generalised eruption after several days These entities can be differentiated from guttate psoriasis based on history and physical examination with skin biopsy when necessary. Guttate psoriasis is a skin condition in which small, droplet-shaped, red patches appear on the arms, legs, scalp, and trunk. The blood tests are aimed at determining the non-specific signs of inflammation (leukocytosis, an increase of erythrocyte sedimentation rate, rheumatoid factor). Important for differential diagnosis, the uniform distribution of the red dots within the lesion represents the dermoscopic hallmark of psoriasis. Background: Psoriasis is an inflammatory skin disease presenting with erythematous and desquamative plaques with sharply demarcated margins, usually localized on extensor surface areas. Differentiating features. It is calculated as follows: Differential diagnosis. Other forms of psoriasis include: Guttate psoriasis. You usually get the patches on your elbows, knees, scalp, back, face, palms and feet, but they can show up on other parts of your body. Differential diagnosis. The keywords used were psoriasis, plaque psoriasis, differential diagnosis, diagnosis, and papulosquamous lesion s. Reviews and original articles published up to 1 September 2020, including case reports, assessing the description of the clinical presentations and differential diagnosis for psoriasis, were included. The differential diagnosis includes pityriasis rosacea, tinea corporis, secondary syphilis, pityriasis lichenoides chronica, nummular dermatitis, and drug eruptions. Guttate psoriasis Microscopic (histologic) description Parakeratosis without hyperkeratosis, acanthosis with downward elongation of rete ridges (resembles a comb), thin / no granular cell layer, suprapapillary thinning (attenuated layer of epidermal cells above tips of dermal papillae), Munro microabscesses (neutrophils in parakeratotic scale) It tends to affect children and young adults and has a good chance of spontaneously clearing. Viral exanthema should also be considered. The diagnosis of psoriasis can be made by clinical observation without laboratory tests in most cases. Differential diagnosis Discoid eczema . Nail psoriasis. There is a strong association between recent infection (usually streptococcal pharyngitis) and guttate psoriasis. Psoriasis is a skin disease that causes itchy or sore patches of thick, red skin with silvery scales. Nummular eczema, tinea corporis, cutaneous T-cell lymphoma, atopic dermatitis, contact dermatitis and yeast infections in skin folds can all be confused with psoriasis. Plaque psoriasis may be confused with: Discoid dermatitis (more itch, vesicles, dry rather than plate-scale) Psoriasis: Epidemiology, clinical manifestations, and diagnosis View in Chinese … with pre-existing psoriasis. You usually get the patches on your elbows, knees, scalp, back, face, palms and feet, but they can show up on other parts of your body. Guttate psoriasis often follows acute group B haemolytic streptococcal pharyngitis in persons genetically predisposed to psoriasis. 3 Skin scrapings and nail clippings may be requiredto exclude tinea. Misdiagnosis of Guttate psoriasis including hidden diseases, diagnosis mistakes, alternative diagnoses, differential diagnoses, and misdiagnosis. Chronic plaque psoriasis (including scalp psoriasis, flexural psoriasis, and facial psoriasis) is the most common form, affecting 80–90% of people with psoriasis. Psoriasis () Definition (MEDLINEPLUS) Psoriasis is a skin disease that causes itchy or sore patches of thick, red skin with silvery scales. Guttate psoriasis (also called eruptive psoriasis) ... which are usually enough for the differential diagnosis. In this study, PLC and GP lesions were examined using dermoscopy, and the significance of s … 2. 54 The clinical features include: … Diagnosis of Guttate Psoriasis Diagnostic considerations. Pityriasis rosea. Lesions are less well defined and may be exudative or crusted, lack ‘candle grease’ scaling, ... 2 Throat swabbing for β-haemolytic streptococci is needed in guttate psoriasis. A careful history should be taken to exclude certain drugs, such as beta-blockers and lithium, which may cause an eruption similar to that of guttate psoriasis. Skin biopsy is more informative. Conditions to consider in the differential diagnosis of guttate psoriasis 1,2; Disease. Epidemiology. It may be precipitated by a streptococcal infection 2-4 weeks prior to the lesions appearing. Psoriasis is a chronic inflammatory disease that affects primarily the skin and joints. The second most common form is localized pustular psoriasis of the palms and soles. The differential diagnosis of psoriasis includes dermatological conditions similar in appearance such as discoid eczema, seborrheic eczema, pityriasis rosea (may be confused with guttate psoriasis), nail fungus (may be confused with nail psoriasis) or cutaneous T cell lymphoma (50% of individuals with this cancer are initially misdiagnosed with psoriasis). Scalp The disease manifests following exposure to various triggers (e.g., infection, medication). 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