Typically presents as a solitary, persistent, well-demarcated erythematous plaque, whereas psoriasis is usually multifocal.
Often distinguished by its irregularly shaped patches and plaques, sometimes with atrophy or poikiloderma, and a characteristic T-cell infiltrate on biopsy.
Presents with distinctive, elongated, finger-like patches primarily on the trunk, lacking the thick, silvery scale of typical psoriasis.
Characterized by more intense pruritus, ill-defined borders, and a tendency towards weeping, rather than the well-demarcated, scaly plaques of psoriasis.
Appears as extremely itchy, violaceous, thickened plaques, most commonly on the shins, and lacks the silvery scale of psoriasis.
Follows the lines of Blaschko in a linear pattern and is present from childhood, unlike the typical onset and distribution of psoriasis.
Presents as large (>5cm), slightly atrophic, orange-red to brown patches with fine 'cigarette paper' wrinkling, and may progress to CTCL.
Occurs as a unilateral, eczematous plaque on the nipple/areola or anogenital region, confirmed by biopsy, rather than the typical psoriatic distribution.
Features a sharply demarcated, bright red, tender eruption in the perianal area, confirmed with a bacterial swab, unlike the scaly nature of psoriasis.
Spares the vermilion border of the lips and presents as monomorphic papules and pustules, a distinct location and morphology from psoriasis.
Presents as perfectly circular, sharply demarcated, hyperpigmented or hypopigmented scaly patches, a unique morphology not seen in psoriasis.
Distinguished by its salmon-pink color, follicular papules that coalesce into plaques, and characteristic 'islands of sparing' within confluent erythema.
Identified by its greasy, yellowish scale and predilection for the scalp, face (nasolabial folds), and central chest, areas of high sebaceous activity.
Consists of small (<5cm), oval, pink-to-yellowish patches, primarily on the trunk, which are typically asymptomatic and non-indurated.
Also known as subcorneal pustular dermatosis, it is characterized by annular or serpiginous collections of sterile pustules, not scaly papules or plaques.
Presents with an annular configuration with a raised, active border and central clearing, and is confirmed by a positive KOH prep or fungal culture.
